https://jshint.com/

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5    <title>JSHint, a JavaScript Code Quality Tool</title>
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8    <meta name=description content="JSHint, a JavaScript Code Quality Tool">
9    <meta name=author      content="Anton Kovalyov">
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36    <div class="whiteboard">
37      <div class="toolbar">
38        <button data-type="toggle" data-target="configure,output">Configure</button>
39      </div>
40
41      <div id="configure">
42        <div>
43          <h4>Report</h4>
44          <button data-type="pref" id="complex">Cyclomatic complexity</button>
45          <button data-type="pref" id="unused">Unused variables</button>
46          <button data-type="pref" id="undef">Undefined variables</button>
47        </div>
48
49        <div>
50          <h4>Warn</h4>
51          <button data-type="pref" id="eqnull">About == null</button>
52          <button data-type="pref" id="debug">About debugging code</button>
53          <button data-type="pref" id="forin">About unsafe for..in</button>
54          <button data-type="pref" id="noarg">About arguments.caller and .callee</button>
55          <button data-type="pref" id="boss">About assignments if/for/...</button>
56          <button data-type="pref" id="loopfunc">About functions inside loops</button>
57          <button data-type="pref" id="evil">About eval</button>
58          <button data-type="pref" id="laxbreak">About unsafe line breaks</button>
59          <button data-type="pref" id="bitwise">About potential typos in logical operators</button>
60          <button data-type="pref" id="strict">When code is not in strict mode</button>
61          <button data-type="pref" id="nonew">When new is used for side-effects</button>
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65          <h4>Assume</h4>
66          <button data-type="pref" id="browser">Browser</button>
67          <button data-type="pref" id="node">NodeJS</button>
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70          <button data-type="pref" id="esnext">New JavaScript features (ES6)</button>
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86
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88      <h1><img src="/res/jshint-dark.png" alt="JSHint"></h1>
89      <span class="version">
90        <a href="https://github.com/jshint/jshint/releases/tag/2.13.6">version 2.13.6</a>
91      </span>
92
93      <ul class="links">
94        <li><a href="/about">About</a></li>
95        <li><a href="/docs">Documentation</a></li>
96        <li><a href="/install">Install</a></li>
97        <li><a href="/contribute">Contribute</a></li>
98        <li><a href="/blog">Blog</a></li>
99      </ul>
100    </div>
101
102    

102<script id="text-intro" type="text/jshint">
103      // Hello.
104      //
105      // This is JSHint, a tool that helps to detect errors and potential
106      // problems in your JavaScript code.
107      //
108      // To start, simply enter some JavaScript anywhere on this page. Your
109      // report will appear on the right side.
110      //
111      // Additionally, you can toggle specific options in the Configure
112      // menu.
113
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