EXT 在textarea的光标处插入

添加 "plugins:new InsertAtCursorTextareaPlugin()"到textarea新建的时候/** * Copyright Intermesh * * This file is part of Group-Office. You should have received a copy of the * Group-Office license along with Group-Office. See the file /LICENSE.TXT * * If you have questions write an e-mail to info@intermesh.nl * * @version $Id: InsertAtCursorTextareaPlugin.js 2353 2009-04-15 11:05:51Z mschering $ * @copyright Copyright Intermesh * @author Merijn Schering <mschering@intermesh.nl> */ Ext.namespace("Ext.ux"); Ext.ux.InsertAtCursorTextareaPlugin = function (){ return { init : function(textarea){ textarea.insertAtCursor = function(v) { if (Ext.isIE) { this.el.focus(); var sel = document.selection.createRange(); sel.text = v; sel.moveEnd('character',v.length); sel.moveStart('character',v.length); }else { var startPos = this.el.dom.selectionStart; var endPos = this.el.dom.selectionEnd; this.el.dom.value = this.el.dom.value.substring(0, startPos) + v + this.el.dom.value.substring(endPos, this.el.dom.value.length); this.el.focus(); this.el.dom.setSelectionRange(endPos+v.length,endPos+v.length); } } } } };