问题是这样的：
有个文本框之前是有默认值，但是如果用户一输入值那么刷新后文本框里的值还是用户输入的值。
麻烦各位帮忙用JS写一下。或提供一下思路也行。谢谢各位大侠了。
------解决方案--------------------------------------------------------
用cookie吧
- JScript code
function SetCookie(name,value) { var key=''; var Days = 2; var exp = new Date(); var domain = ""; exp.setTime(exp.getTime() + Days * 24 * 60 * 60 * 1000); if (key == null || key == "") { document.cookie = name + "=" + encodeURI(value) + ";expires=" + exp.toGMTString() + ";path=/;domain=" + domain + ";"; } else { var nameValue = GetCookie(name); if (nameValue == "") { document.cookie = name + "=" + key + "=" + encodeURI(value) + ";expires=" + exp.toGMTString() + ";path=/;domain=" + domain + ";"; } else { var keyValue = getCookie(name, key); if (keyValue != "") { nameValue = nameValue.replace(key + "=" + keyValue, key + "=" + encodeURI(value)); document.cookie = name + "=" + nameValue + ";expires=" + exp.toGMTString() + ";path=/;domain=" + domain + ";"; } else { document.cookie = name + "=" + nameValue + "&" + key + "=" + encodeURI(value) + ";expires=" + exp.toGMTString() + ";path=/;" + domain + ";"; } } }}function GetCookie(name) { var nameValue = ""; var key=""; var arr, reg = new RegExp("(^| )" + name + "=([^;]*)(;|$)"); if (arr = document.cookie.match(reg)) { nameValue = decodeURI(arr[2]); } if (key != null && key != "") { reg = new RegExp("(^| |&)" + key + "=([^(;|&|=)]*)(&|$)"); if (arr = nameValue.match(reg)) { return decodeURI(arr[2]); } else return ""; } else { return nameValue; }}
------解决方案--------------------------------------------------------
- JScript code
//保存用户条件var key = "<%=key %>";var stardate = "<%=stardate %>";var dataend = "<%=dataend %>";if (document.getElementById("serchinput").value == "") { document.getElementById("serchinput").value = key;}if (document.getElementById("datastart").value == "") { document.getElementById("datastart").value = stardate;}if (document.getElementById("dataend").value == "") { document.getElementById("dataend").value = dataend;} </script>