<input type="text" id="txtkey" placeholder="请输入关键字" name="sear_key" /> <input type="button" value="" onclick="Judge()" name="sear_key" /> <script type="text/javascript"> function Judge() { var key=document.getElementById("txtkey").value; if(key=="") { alert("请输入关键字后再查询!"); return false; } else { var url="search.aspx?sear_key="+escape(key); window.open(url); } } </script>
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