UE.registerUI('beijing', function (editor, uiName) {// 注册按钮执行时的command命令editor.registerCommand(uiName, {execCommand: function () {//获得选中文本内容//当你点击按钮时编辑区域已经失去了焦点，如果直接用getText将不会得到内容，所以要在选回来，然后取得内容var range = UE.getEditor('editor').selection.getRange();range.select();var txt = UE.getEditor('editor').selection.getText();//txt有【】时，去掉var _value1 = '【'; var _value2 = '】';txt = txt.replace(new RegExp(_value1), "");txt = txt.replace(new RegExp(_value2), "");//去除空格// txt = txt.replace(/(^[\s]+|[\s]+$)/g, "");txt = txt.replace(/\s/g, "");//获得整个文本框内容  getPlainTxt()带格式的// var txtquanbu = UE.getEditor('editor').getContentTxt();var txtquanbu = UE.getEditor('editor').getPlainTxt();txtquanbu = txtquanbu.replace(new RegExp(_value1), "");txtquanbu = txtquanbu.replace(new RegExp(_value2), "");var _value = "【】";var _valueSplit1 = _value.slice(0, 1);var _valueSplit2 = _value.slice(1, 2);var result = "";if (txt.indexOf("【") != -1) {return;} else {result = _valueSplit1 + txt + _valueSplit2;}//返回选中的位置var tt = txtquanbu.search(txt);//在选中的位置上进行替换var value = txtquanbu.replace(txt, result);var str = value.replace(/\n/g, "<br\/>");//写入必须是没有选中的内容和加上【】的内容editor.setContent(str);}});// 创建一个buttonvar btn = new UE.ui.Button({name: uiName,title:'加特殊符号',onclick: function () {editor.execCommand(uiName);}});// 当点到编辑内容上时，按钮要做的状态反射editor.addListener('selectionchange', function () {if (editor.queryCommandState('bold')) {btn.setChecked(true);} else {btn.setChecked(false);}});return btn;});