js 判断ie
var isIE = !!window.ActiveXObject; var isIE6 = isIE && !window.XMLHttpRequest; var isIE7 = !!(!window.addEventListener && window.XMLHttpRequest && !document.querySelectorAll); var isIE8 = !!(!window.addEventListener && document.querySelectorAll); $(function(){ if(isIE || isIE6 || isIE7 || isIE8){ //do something }else{ //do something } })