tern.html (4473B)
1 <!doctype html> 2 3 <title>CodeMirror: Tern Demo</title> 4 <meta charset="utf-8"/> 5 <link rel=stylesheet href="../doc/docs.css"> 6 7 <link rel="stylesheet" href="../lib/codemirror.css"> 8 <link rel="stylesheet" href="../addon/dialog/dialog.css"> 9 <link rel="stylesheet" href="../addon/hint/show-hint.css"> 10 <link rel="stylesheet" href="../addon/tern/tern.css"> 11 <script src="../lib/codemirror.js"></script> 12 <script src="../mode/javascript/javascript.js"></script> 13 <script src="../addon/dialog/dialog.js"></script> 14 <script src="../addon/hint/show-hint.js"></script> 15 <script src="../addon/tern/tern.js"></script> 16 <script src="//ternjs.net/node_modules/acorn/dist/acorn.js"></script> 17 <script src="//ternjs.net/node_modules/acorn/dist/acorn_loose.js"></script> 18 <script src="//ternjs.net/node_modules/acorn/dist/walk.js"></script> 19 <script src="//ternjs.net/doc/demo/polyfill.js"></script> 20 <script src="//ternjs.net/lib/signal.js"></script> 21 <script src="//ternjs.net/lib/tern.js"></script> 22 <script src="//ternjs.net/lib/def.js"></script> 23 <script src="//ternjs.net/lib/comment.js"></script> 24 <script src="//ternjs.net/lib/infer.js"></script> 25 <script src="//ternjs.net/plugin/doc_comment.js"></script> 26 <style> 27 .CodeMirror {border: 1px solid #ddd;} 28 </style> 29 <div id=nav> 30 <a href="http://codemirror.net"><h1>CodeMirror</h1><img id=logo src="../doc/logo.png"></a> 31 32 <ul> 33 <li><a href="../index.html">Home</a> 34 <li><a href="../doc/manual.html">Manual</a> 35 <li><a href="https://github.com/codemirror/codemirror">Code</a> 36 </ul> 37 <ul> 38 <li><a class=active href="#">Tern</a> 39 </ul> 40 </div> 41 42 <article> 43 <h2>Tern Demo</h2> 44 <form><textarea id="code" name="code">// Use ctrl-space to complete something 45 // Put the cursor in or after an expression, press ctrl-o to 46 // find its type 47 48 var foo = ["array", "of", "strings"]; 49 var bar = foo.slice(0, 2).join("").split("a")[0]; 50 51 // Works for locally defined types too. 52 53 function CTor() { this.size = 10; } 54 CTor.prototype.hallo = "hallo"; 55 56 var baz = new CTor; 57 baz. 58 59 // You can press ctrl-q when the cursor is on a variable name to 60 // rename it. Try it with CTor... 61 62 // When the cursor is in an argument list, the arguments are 63 // shown below the editor. 64 65 [1].reduce( ); 66 67 // And a little more advanced code... 68 69 (function(exports) { 70 exports.randomElt = function(arr) { 71 return arr[Math.floor(arr.length * Math.random())]; 72 }; 73 exports.strList = "foo".split(""); 74 exports.intList = exports.strList.map(function(s) { return s.charCodeAt(0); }); 75 })(window.myMod = {}); 76 77 var randomStr = myMod.randomElt(myMod.strList); 78 var randomInt = myMod.randomElt(myMod.intList); 79 </textarea></form> 80 81 <p>Demonstrates integration of <a href="http://ternjs.net/">Tern</a> 82 and CodeMirror. The following keys are bound:</p> 83 84 <dl> 85 <dt>Ctrl-Space</dt><dd>Autocomplete</dd> 86 <dt>Ctrl-O</dt><dd>Find docs for the expression at the cursor</dd> 87 <dt>Ctrl-I</dt><dd>Find type at cursor</dd> 88 <dt>Alt-.</dt><dd>Jump to definition (Alt-, to jump back)</dd> 89 <dt>Ctrl-Q</dt><dd>Rename variable</dd> 90 <dt>Ctrl-.</dt><dd>Select all occurrences of a variable</dd> 91 </dl> 92 93 <p>Documentation is sparse for now. See the top of 94 the <a href="../addon/tern/tern.js">script</a> for a rough API 95 overview.</p> 96 97 <script> 98 function getURL(url, c) { 99 var xhr = new XMLHttpRequest(); 100 xhr.open("get", url, true); 101 xhr.send(); 102 xhr.onreadystatechange = function() { 103 if (xhr.readyState != 4) return; 104 if (xhr.status < 400) return c(null, xhr.responseText); 105 var e = new Error(xhr.responseText || "No response"); 106 e.status = xhr.status; 107 c(e); 108 }; 109 } 110 111 var server; 112 getURL("//ternjs.net/defs/ecmascript.json", function(err, code) { 113 if (err) throw new Error("Request for ecmascript.json: " + err); 114 server = new CodeMirror.TernServer({defs: [JSON.parse(code)]}); 115 editor.setOption("extraKeys", { 116 "Ctrl-Space": function(cm) { server.complete(cm); }, 117 "Ctrl-I": function(cm) { server.showType(cm); }, 118 "Ctrl-O": function(cm) { server.showDocs(cm); }, 119 "Alt-.": function(cm) { server.jumpToDef(cm); }, 120 "Alt-,": function(cm) { server.jumpBack(cm); }, 121 "Ctrl-Q": function(cm) { server.rename(cm); }, 122 "Ctrl-.": function(cm) { server.selectName(cm); } 123 }) 124 editor.on("cursorActivity", function(cm) { server.updateArgHints(cm); }); 125 }); 126 127 var editor = CodeMirror.fromTextArea(document.getElementById("code"), { 128 lineNumbers: true, 129 mode: "javascript" 130 }); 131 </script> 132 133 </article>