<!doctype html> <title>CodeMirror: Breakpoint Demo</title> <meta charset="utf-8"/> <link rel=stylesheet href="../doc/docs.css"> <link rel="stylesheet" href="../lib/codemirror.css"> <script src="../lib/codemirror.js"></script> <script src="../mode/javascript/javascript.js"></script> <style type="text/css"> .breakpoints {width: .8em;} .breakpoint { color: #822; } .CodeMirror {border: 1px solid #aaa;} </style> <div id=nav> <a href="http://codemirror.net"><img id=logo src="../doc/logo.png"></a> <ul> <li><a href="../index.html">Home</a> <li><a href="../doc/manual.html">Manual</a> <li><a href="https://github.com/marijnh/codemirror">Code</a> </ul> <ul> <li><a class=active href="#">Breakpoint</a> </ul> </div> <article> <h2>Breakpoint Demo</h2> <form><textarea id="code" name="code"> var editor = CodeMirror.fromTextArea(document.getElementById("code"), { lineNumbers: true, gutters: ["CodeMirror-linenumbers", "breakpoints"] }); editor.on("gutterClick", function(cm, n) { var info = cm.lineInfo(n); cm.setGutterMarker(n, "breakpoints", info.gutterMarkers ? null : makeMarker()); }); function makeMarker() { var marker = document.createElement("div"); marker.style.color = "#822"; marker.innerHTML = "●"; return marker; } </textarea></form> <p>Click the line-number gutter to add or remove 'breakpoints'.</p> <script>eval(document.getElementById("code").value);</script> </article>