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