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这个类摘自: ASP.NETAjax典型应用 一书xmlhttp.jsfunction $() { var elements = new Array(); for (var i = 0; i < arguments.length; i++) { var element = arguments[i]; if (typeof element == 'string') element = document.getElementById(element); if (arguments.length == 1) return element; elements.push(eleme 阅读全文