FAST_Michael的专栏

var EventUtil = {addHandler: function(element, type, handler){if (element.addEventListener){element.addEventListener(type, handler, false);} else if (element.attachEvent){element.attachEvent("on" + type, handler);} else {element["on" + type]

function getSelectedText(textbox) { if (document.selection) { return document.selection.createRange().text; } else { return textbox.value.substring(textbox.selectionStart,textbox.selectionEnd); }} IE9之前不提供selectionStart,s