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日本网站设计模仿欧美,成都营销推广公司,汉川网站开发,怎么做阿里妈妈企业网站CodeMirror 是一个网络代码编辑器组件。它可以在网站中用于实现支持多种编辑功能的文本输入字段，并具有丰富的编程接口以允许进一步扩展。本文为 xml 格式的代码提示约束格式规范的自定义示例内容。先看效果，如下： 官方 Demo 的完整代码如…

CodeMirror 是一个网络代码编辑器组件。它可以在网站中用于实现支持多种编辑功能的文本输入字段，并具有丰富的编程接口以允许进一步扩展。

本文为 xml 格式的代码提示约束格式规范的自定义示例内容。

先看效果，如下：

在这里插入图片描述

官方 Demo 的完整代码如下（重点看代码中 tags 的配置）：

<!doctype html><title>CodeMirror: XML Autocomplete Demo</title>
<meta charset="utf-8"/>
<link rel=stylesheet href="../doc/docs.css"><link rel="stylesheet" href="../lib/codemirror.css">
<link rel="stylesheet" href="../addon/hint/show-hint.css">
<script src="../lib/codemirror.js"></script>
<script src="../addon/hint/show-hint.js"></script>
<script src="../addon/hint/xml-hint.js"></script>
<script src="../mode/xml/xml.js"></script>
<style>.CodeMirror { border: 1px solid #eee; }</style>
<div id=nav><a href="https://codemirror.net/5"><h1>CodeMirror</h1><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/codemirror/codemirror5">Code</a></ul><ul><li><a class=active href="#">XML Autocomplete</a></ul>
</div><article>
<h2>XML Autocomplete Demo</h2>
<form><textarea id="code" name="code"><!-- write some xml below -->
</textarea></form><p>Press <strong>ctrl-space</strong>, or type a '&lt;' character toactivate autocompletion. This demo defines a simple schema thatguides completion. The schema can be customized—seethe <a href="../doc/manual.html#addon_xml-hint">manual</a>.</p><p>Development of the <code>xml-hint</code> addon was kindlysponsoredby <a href="http://www.xperiment.mobi">www.xperiment.mobi</a>.</p><script>var dummy = {attrs: {color: ["red", "green", "blue", "purple", "white", "black", "yellow"],size: ["large", "medium", "small"],description: null},children: []};var tags = {"!top": ["top"],"!attrs": {id: null,class: ["A", "B", "C"]},top: {attrs: {lang: ["en", "de", "fr", "nl"],freeform: null},children: ["animal", "plant"]},animal: {attrs: {name: null,isduck: ["yes", "no"]},children: ["wings", "feet", "body", "head", "tail"]},plant: {attrs: {name: null},children: ["leaves", "stem", "flowers"]},wings: dummy, feet: dummy, body: dummy, head: dummy, tail: dummy,leaves: dummy, stem: dummy, flowers: dummy};function completeAfter(cm, pred) {var cur = cm.getCursor();if (!pred || pred()) setTimeout(function() {if (!cm.state.completionActive)cm.showHint({completeSingle: false});}, 100);return CodeMirror.Pass;}function completeIfAfterLt(cm) {return completeAfter(cm, function() {var cur = cm.getCursor();return cm.getRange(CodeMirror.Pos(cur.line, cur.ch - 1), cur) == "<";});}function completeIfInTag(cm) {return completeAfter(cm, function() {var tok = cm.getTokenAt(cm.getCursor());if (tok.type == "string" && (!/['"]/.test(tok.string.charAt(tok.string.length - 1)) || tok.string.length == 1)) return false;var inner = CodeMirror.innerMode(cm.getMode(), tok.state).state;return inner.tagName;});}var editor = CodeMirror.fromTextArea(document.getElementById("code"), {mode: "xml",lineNumbers: true,extraKeys: {"'<'": completeAfter,"'/'": completeIfAfterLt,"' '": completeIfInTag,"'='": completeIfInTag,"Ctrl-Space": "autocomplete"},hintOptions: {schemaInfo: tags}});</script></article>