1553 lines
44 KiB
HTML
1553 lines
44 KiB
HTML
<!DOCTYPE html>
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<html>
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<head>
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<meta charset="utf-8">
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<meta http-equiv="X-UA-Compatible" content="IE=edge">
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<meta name="viewport" content="width=device-width, initial-scale=1">
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<meta name="description" content="Index of all built-in rules available for Ecmascript">
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<meta name="keywords" content="rule_referencesecmascript, ">
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<title>Ecmascript Rules | PMD Source Code Analyzer</title>
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<body>
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<li><a href="https://github.com/pmd/pmd/releases/latest" target="_blank">Download</a></li>
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<li><a href="https://github.com/pmd/pmd" target="_blank">Fork us on github</a></li>
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<ul id="mysidebar" class="nav">
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<li class="sidebarTitle">PMD 6.39.0-SNAPSHOT</li>
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<li>
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<a href="#">About</a>
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<ul>
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<li><a href="index.html">Home</a></li>
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<li><a href="pmd_release_notes.html">Release notes</a></li>
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<li><a href="pmd_next_major_development.html">PMD 7.0.0 development</a></li>
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<li><a href="pmd_about_help.html">Getting help</a></li>
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</li>
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<li>
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<a href="#">User Documentation</a>
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<ul>
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<li><a href="pmd_userdocs_installation.html">Installation and basic CLI usage</a></li>
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<li><a href="pmd_userdocs_making_rulesets.html">Making rulesets</a></li>
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<li><a href="pmd_userdocs_configuring_rules.html">Configuring rules</a></li>
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<li><a href="pmd_userdocs_best_practices.html">Best practices</a></li>
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<li><a href="pmd_userdocs_suppressing_warnings.html">Suppressing warnings</a></li>
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<li><a href="pmd_userdocs_incremental_analysis.html">Incremental analysis</a></li>
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<li><a href="pmd_userdocs_cli_reference.html">PMD CLI reference</a></li>
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<li><a href="pmd_userdocs_report_formats.html">PMD Report formats</a></li>
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<li class="subfolders">
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<a href="#">CPD reference</a>
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<ul>
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<li><a href="pmd_userdocs_cpd.html">Copy-paste detection</a></li>
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<li><a href="pmd_userdocs_cpd_report_formats.html">CPD Report formats</a></li>
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</ul>
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</li>
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<li class="subfolders">
|
||
<a href="#">Extending PMD</a>
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||
<ul>
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||
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||
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||
<li><a href="pmd_userdocs_extending_writing_rules_intro.html">Introduction to writing rules</a></li>
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||
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||
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||
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||
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||
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||
<li><a href="pmd_userdocs_extending_your_first_rule.html">Your first rule</a></li>
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||
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||
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||
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<li><a href="pmd_userdocs_extending_writing_xpath_rules.html">XPath rules</a></li>
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||
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||
<li><a href="pmd_userdocs_extending_writing_java_rules.html">Java rules</a></li>
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||
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||
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<li><a href="pmd_userdocs_extending_designer_reference.html">Rule designer reference</a></li>
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||
|
||
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||
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||
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||
|
||
<li><a href="pmd_userdocs_extending_defining_properties.html">Defining rule properties</a></li>
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||
|
||
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||
|
||
|
||
|
||
<li><a href="pmd_userdocs_extending_metrics_howto.html">Using and defining code metrics</a></li>
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||
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||
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||
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||
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||
|
||
<li><a href="pmd_userdocs_extending_rule_guidelines.html">Rule guidelines</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_userdocs_extending_testing.html">Testing your rules</a></li>
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||
|
||
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||
|
||
</ul>
|
||
</li>
|
||
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||
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||
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||
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||
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||
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||
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||
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||
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<li class="subfolders">
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<a href="#">Tools / Integrations</a>
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<ul>
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||
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||
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||
<li><a href="pmd_userdocs_tools_maven.html">Maven PMD Plugin</a></li>
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||
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||
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||
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<li><a href="pmd_userdocs_tools_gradle.html">Gradle</a></li>
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||
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||
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||
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||
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<li><a href="pmd_userdocs_tools_ant.html">Ant</a></li>
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||
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||
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<li><a href="pmd_userdocs_tools_java_api.html">PMD Java API</a></li>
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<li><a href="pmd_userdocs_tools_ci.html">CI integrations</a></li>
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<li><a href="pmd_userdocs_tools.html">Other Tools / Integrations</a></li>
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||
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||
</ul>
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||
</li>
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||
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||
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||
|
||
|
||
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||
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||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
<li>
|
||
|
||
<a href="#">Rule Reference</a>
|
||
|
||
<ul>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Apex Rules</a>
|
||
<ul>
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||
|
||
|
||
|
||
<li><a href="pmd_rules_apex.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_apex_bestpractices.html">Best Practices</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_apex_codestyle.html">Code Style</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_apex_design.html">Design</a></li>
|
||
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||
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||
|
||
|
||
|
||
<li><a href="pmd_rules_apex_documentation.html">Documentation</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_apex_errorprone.html">Error Prone</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_apex_performance.html">Performance</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_apex_security.html">Security</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Ecmascript Rules</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li class="active"><a href="pmd_rules_ecmascript.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_ecmascript_bestpractices.html">Best Practices</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_ecmascript_codestyle.html">Code Style</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_ecmascript_errorprone.html">Error Prone</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Java Rules</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_java.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_java_bestpractices.html">Best Practices</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_java_codestyle.html">Code Style</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_java_design.html">Design</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_java_documentation.html">Documentation</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_java_errorprone.html">Error Prone</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_java_multithreading.html">Multithreading</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_java_performance.html">Performance</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_java_security.html">Security</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Java Server Pages Rules</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_jsp.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_jsp_bestpractices.html">Best Practices</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_jsp_codestyle.html">Code Style</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_jsp_design.html">Design</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_jsp_errorprone.html">Error Prone</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_jsp_security.html">Security</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Maven POM Rules</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_pom.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_pom_errorprone.html">Error Prone</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Modelica Rules</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_modelica.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_modelica_bestpractices.html">Best Practices</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">PLSQL Rules</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_plsql.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_plsql_bestpractices.html">Best Practices</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_plsql_codestyle.html">Code Style</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_plsql_design.html">Design</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_plsql_errorprone.html">Error Prone</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Salesforce VisualForce Rules</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_vf.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_vf_security.html">Security</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">VM Rules</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_vm.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_vm_bestpractices.html">Best Practices</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_vm_design.html">Design</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_vm_errorprone.html">Error Prone</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">XML Rules</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_xml.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_xml_errorprone.html">Error Prone</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">XSL Rules</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_xsl.html">Index</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_xsl_codestyle.html">Code Style</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_rules_xsl_performance.html">Performance</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
<li>
|
||
|
||
<a href="#">Language Specific Documentation</a>
|
||
|
||
<ul>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_languages_jsp.html">JSP Support</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_java_metrics_index.html">Java code metrics</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_apex_metrics_index.html">Apex code metrics</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_languages_plsql.html">PLSQL</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
<li>
|
||
|
||
<a href="#">Developer Documentation</a>
|
||
|
||
<ul>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_development.html">Developer resources</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_building.html">Building PMD from source</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="https://github.com/pmd/pmd/blob/master/CONTRIBUTING.md" target="_blank">Contributing</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_writing_documentation.html">Writing documentation</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_roadmap.html">Roadmap</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_how_pmd_works.html">How PMD works</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_pmdtester.html">Pmdtester</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_rule_deprecation_policy.html">Rule Deprecation Policy</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Major contributions</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_major_rule_guidelines.html">Rule Guidelines</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_major_adding_new_language.html">Adding a new language</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_major_adding_new_cpd_language.html">Adding a new CPD language</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_major_adding_new_metrics_framework.html">Adding metrics support to a language</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Experimental features</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_devdocs_experimental_ast_dump.html">Creating (XML) dump of the AST</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
<li>
|
||
|
||
<a href="#">Project documentation</a>
|
||
|
||
<ul>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Trivia about PMD</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_projectdocs_trivia_news.html">PMD in the press</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_projectdocs_trivia_products.html">Products & books related to PMD</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_projectdocs_trivia_similarprojects.html">Similar projects</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_projectdocs_trivia_meaning.html">What does 'PMD' mean?</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_projectdocs_faq.html">FAQ</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="license.html">License</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_projectdocs_credits.html">Credits</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_release_notes_old.html">Old release notes</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<li class="subfolders">
|
||
<a href="#">Project management</a>
|
||
<ul>
|
||
|
||
|
||
|
||
<li><a href="pmd_projectdocs_committers_infrastructure.html">Infrastructure</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_projectdocs_committers_releasing.html">Release process</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_projectdocs_committers_merging_pull_requests.html">Merging pull requests</a></li>
|
||
|
||
|
||
|
||
|
||
|
||
<li><a href="pmd_projectdocs_committers_main_landing_page.html">Main Landing page</a></li>
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
</ul>
|
||
</li>
|
||
|
||
|
||
|
||
<!-- if you aren't using the accordion, uncomment this block:
|
||
<p class="external">
|
||
<a href="#" id="collapseAll">Collapse All</a> | <a href="#" id="expandAll">Expand All</a>
|
||
</p>
|
||
-->
|
||
</ul>
|
||
|
||
<!-- this highlights the active parent class in the navgoco sidebar. this is critical so that the parent expands when you're viewing a page. This must appear below the sidebar code above. Otherwise, if placed inside customscripts.js, the script runs before the sidebar code runs and the class never gets inserted.-->
|
||
<script>$("li.active").parents('li').toggleClass("active");</script>
|
||
|
||
</div>
|
||
|
||
|
||
|
||
<!-- Content Column -->
|
||
<div class="col-md-9" id="tg-sb-content">
|
||
<div class="post-header">
|
||
<h1 class="post-title-main">Ecmascript Rules</h1>
|
||
</div>
|
||
|
||
|
||
|
||
<div class="post-content">
|
||
|
||
|
||
<div class="summary">Index of all built-in rules available for Ecmascript</div>
|
||
|
||
|
||
|
||
|
||
<!-- this handles the automatic toc. use ## for subheads to auto-generate the on-page minitoc. if you use html tags, you must supply an ID for the heading element in order for it to appear in the minitoc. -->
|
||
<script>
|
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$( document ).ready(function() {
|
||
// Handler for .ready() called.
|
||
|
||
$('#toc').toc({ minimumHeaders: 0, listType: 'ul', showSpeed: 0, headers: 'h2,h3,h4' });
|
||
|
||
});
|
||
</script>
|
||
|
||
<div id="toc"></div>
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
|
||
<!-- DO NOT EDIT THIS FILE. This file is generated. -->
|
||
<h2 id="best-practices">Best Practices</h2>
|
||
|
||
<div class="bs-callout bs-callout-">Rules which enforce generally accepted best practices.</div>
|
||
|
||
<ul>
|
||
<li><a href="pmd_rules_ecmascript_bestpractices.html#avoidwithstatement">AvoidWithStatement</a>: Avoid using with - it’s bad news</li>
|
||
<li><a href="pmd_rules_ecmascript_bestpractices.html#consistentreturn">ConsistentReturn</a>: ECMAScript does provide for return types on functions, and therefore there is no solid rule as to…</li>
|
||
<li><a href="pmd_rules_ecmascript_bestpractices.html#globalvariable">GlobalVariable</a>: This rule helps to avoid using accidently global variables by simply missing the "var" declaratio…</li>
|
||
<li><a href="pmd_rules_ecmascript_bestpractices.html#scopeforinvariable">ScopeForInVariable</a>: A for-in loop in which the variable name is not explicitly scoped to the enclosing scope with the…</li>
|
||
<li><a href="pmd_rules_ecmascript_bestpractices.html#usebasewithparseint">UseBaseWithParseInt</a>: This rule checks for usages of parseInt. While the second parameter is optional and usually defau…</li>
|
||
</ul>
|
||
|
||
<h2 id="code-style">Code Style</h2>
|
||
|
||
<div class="bs-callout bs-callout-">Rules which enforce a specific coding style.</div>
|
||
|
||
<ul>
|
||
<li><a href="pmd_rules_ecmascript_codestyle.html#assignmentinoperand">AssignmentInOperand</a>: Avoid assignments in operands; this can make code more complicated and harder to read. This is s…</li>
|
||
<li><a href="pmd_rules_ecmascript_codestyle.html#forloopsmustusebraces">ForLoopsMustUseBraces</a>: Avoid using ‘for’ statements without using curly braces.</li>
|
||
<li><a href="pmd_rules_ecmascript_codestyle.html#ifelsestmtsmustusebraces">IfElseStmtsMustUseBraces</a>: Avoid using if..else statements without using curly braces.</li>
|
||
<li><a href="pmd_rules_ecmascript_codestyle.html#ifstmtsmustusebraces">IfStmtsMustUseBraces</a>: Avoid using if statements without using curly braces.</li>
|
||
<li><a href="pmd_rules_ecmascript_codestyle.html#noelsereturn">NoElseReturn</a>: The else block in a if-else-construct is unnecessary if the ‘if’ block contains a return. Then th…</li>
|
||
<li><a href="pmd_rules_ecmascript_codestyle.html#unnecessaryblock">UnnecessaryBlock</a>: An unnecessary Block is present. Such Blocks are often used in other languages to introduce a ne…</li>
|
||
<li><a href="pmd_rules_ecmascript_codestyle.html#unnecessaryparentheses">UnnecessaryParentheses</a>: Unnecessary parentheses should be removed.</li>
|
||
<li><a href="pmd_rules_ecmascript_codestyle.html#unreachablecode">UnreachableCode</a>: A ‘return’, ‘break’, ‘continue’, or ‘throw’ statement should be the last in a block. Statements a…</li>
|
||
<li><a href="pmd_rules_ecmascript_codestyle.html#whileloopsmustusebraces">WhileLoopsMustUseBraces</a>: Avoid using ‘while’ statements without using curly braces.</li>
|
||
</ul>
|
||
|
||
<h2 id="error-prone">Error Prone</h2>
|
||
|
||
<div class="bs-callout bs-callout-">Rules to detect constructs that are either broken, extremely confusing or prone to runtime errors.</div>
|
||
|
||
<ul>
|
||
<li><a href="pmd_rules_ecmascript_errorprone.html#avoidtrailingcomma">AvoidTrailingComma</a>: This rule helps improve code portability due to differences in browser treatment of trailing comm…</li>
|
||
<li><a href="pmd_rules_ecmascript_errorprone.html#equalcomparison">EqualComparison</a>: Using == in condition may lead to unexpected results, as the variables are automatically casted t…</li>
|
||
<li><a href="pmd_rules_ecmascript_errorprone.html#innaccuratenumericliteral">InnaccurateNumericLiteral</a>: The numeric literal will have a different value at runtime, which can happen if you provide too m…</li>
|
||
</ul>
|
||
|
||
<h2 id="additional-rulesets">Additional rulesets</h2>
|
||
|
||
<ul>
|
||
<li>
|
||
<p>Basic Ecmascript (<code class="language-plaintext highlighter-rouge">rulesets/ecmascript/basic.xml</code>):</p>
|
||
|
||
<p><span style="border-radius: 0.25em; color: #fff; padding: 0.2em 0.6em 0.3em; display: inline; background-color: #d9534f; font-size: 75%;">Deprecated</span> This ruleset is for backwards compatibility.</p>
|
||
|
||
<p>It contains the following rules:</p>
|
||
|
||
<p><a href="pmd_rules_ecmascript_codestyle.html#assignmentinoperand">AssignmentInOperand</a>, <a href="pmd_rules_ecmascript_errorprone.html#avoidtrailingcomma">AvoidTrailingComma</a>, <a href="pmd_rules_ecmascript_bestpractices.html#consistentreturn">ConsistentReturn</a>, <a href="pmd_rules_ecmascript_errorprone.html#equalcomparison">EqualComparison</a>, <a href="pmd_rules_ecmascript_bestpractices.html#globalvariable">GlobalVariable</a>, <a href="pmd_rules_ecmascript_errorprone.html#innaccuratenumericliteral">InnaccurateNumericLiteral</a>, <a href="pmd_rules_ecmascript_bestpractices.html#scopeforinvariable">ScopeForInVariable</a>, <a href="pmd_rules_ecmascript_codestyle.html#unreachablecode">UnreachableCode</a>, <a href="pmd_rules_ecmascript_bestpractices.html#usebasewithparseint">UseBaseWithParseInt</a></p>
|
||
</li>
|
||
<li>
|
||
<p>Braces (<code class="language-plaintext highlighter-rouge">rulesets/ecmascript/braces.xml</code>):</p>
|
||
|
||
<p><span style="border-radius: 0.25em; color: #fff; padding: 0.2em 0.6em 0.3em; display: inline; background-color: #d9534f; font-size: 75%;">Deprecated</span> This ruleset is for backwards compatibility.</p>
|
||
|
||
<p>It contains the following rules:</p>
|
||
|
||
<p><a href="pmd_rules_ecmascript_codestyle.html#forloopsmustusebraces">ForLoopsMustUseBraces</a>, <a href="pmd_rules_ecmascript_codestyle.html#ifelsestmtsmustusebraces">IfElseStmtsMustUseBraces</a>, <a href="pmd_rules_ecmascript_codestyle.html#ifstmtsmustusebraces">IfStmtsMustUseBraces</a>, <a href="pmd_rules_ecmascript_codestyle.html#whileloopsmustusebraces">WhileLoopsMustUseBraces</a></p>
|
||
</li>
|
||
<li>
|
||
<p>Controversial Ecmascript (<code class="language-plaintext highlighter-rouge">rulesets/ecmascript/controversial.xml</code>):</p>
|
||
|
||
<p><span style="border-radius: 0.25em; color: #fff; padding: 0.2em 0.6em 0.3em; display: inline; background-color: #d9534f; font-size: 75%;">Deprecated</span> This ruleset is for backwards compatibility.</p>
|
||
|
||
<p>It contains the following rules:</p>
|
||
|
||
<p><a href="pmd_rules_ecmascript_bestpractices.html#avoidwithstatement">AvoidWithStatement</a></p>
|
||
</li>
|
||
<li>
|
||
<p>Unnecessary (<code class="language-plaintext highlighter-rouge">rulesets/ecmascript/unnecessary.xml</code>):</p>
|
||
|
||
<p><span style="border-radius: 0.25em; color: #fff; padding: 0.2em 0.6em 0.3em; display: inline; background-color: #d9534f; font-size: 75%;">Deprecated</span> This ruleset is for backwards compatibility.</p>
|
||
|
||
<p>It contains the following rules:</p>
|
||
|
||
<p><a href="pmd_rules_ecmascript_codestyle.html#noelsereturn">NoElseReturn</a>, <a href="pmd_rules_ecmascript_codestyle.html#unnecessaryblock">UnnecessaryBlock</a>, <a href="pmd_rules_ecmascript_codestyle.html#unnecessaryparentheses">UnnecessaryParentheses</a></p>
|
||
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|
||
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