如何用JS判断两个文本框输入的数据不一致,并弹出对话框 js判断文本框是否为空，为空则弹出提示
jsp\u4e2d\u7528javascript\u5224\u65ad\u4e24\u6b21\u8f93\u5165\u5185\u5bb9\u662f\u5426\u4e00\u81f4\uff0c\u4e3a\u4ec0\u4e48\u4e0d\u5f39\u51fa\u5bf9\u8bdd\u6846\u554a\uff1f\u4ee3\u7801\u5982\u4e0b<%@ page language="java" contentType="text/html; charset=GB18030"
pageEncoding="GB18030"%>
<LINK media=screen href="./css/style2.css" type=text/css
rel=stylesheet>
\u65b0\u7528\u6237\u6ce8\u518c
function check() {
var pwd1 = Document.form1.pwd1.value;
var pwd2 = Document.form1.pwd2.value;
if(pwd1!=pwd2){
alter("\u4e24\u6b21\u8f93\u5165\u5bc6\u7801\u4e0d\u4e00\u81f4\uff0c\u8bf7\u91cd\u65b0\u8f93\u5165\uff01");
return false;
}else{
return true;
}
}
User Name\uff1a
*
Student ID\uff1a
*
Sex\uff1a
boy
girl
Password\uff1a
*
Confirm Password\uff1a
*
Phone\uff1a
*
Email\uff1a
*
\u60a8\u7684Document\u5728\u54ea\u5462\uff1f
HTML\u90e8\u5206\uff1a
js\u90e8\u5206\uff1a
function checkIP(){
var text=document.getElementById("url");
if(text.value==""){
alert("\u4e0d\u80fd\u4e3a\u7a7a\u54e6\uff01");
}
}
\u9519\u8bef\u539f\u56e0\uff1a
\u6ca1\u6709\u6b63\u786e\u5b9a\u4f4d\u5230input\u5143\u7d20\u3002
id\u503c\u4e3a"url"\uff0cname\u503c\u4e3a"ip"\u3002
var text=document.getElementById("ip");
\u5e94\u8be5\u6539\u4e3a\uff1a
var text=document.getElementById("url");
\u6269\u5c55\u8d44\u6599\uff1a
1\u3001js\u4ee3\u7801\u5b9e\u73b0\u5bf9input\u6587\u672c\u6846\u8fdb\u884c\u8d4b\u503c\uff1a
document.getElementById(url).value='\u503c';
document.getElementById(url).html('\u503c');
document.getElementById(url).attr('\u503c');
document.getElementById(url).innerText = '\u503c';
2\u3001jQuery\u5b9e\u73b0\u5bf9input\u6587\u672c\u6846\u8fdb\u884c\u8d4b\u503c\uff1a
$("#url").attr("value","\u503c");
$('#url).val('\u503c');
页面在俩文件框-->
密码：<input type="text" name="psd1" value="123456"/>
重复密码：<input type="text" name="psd2" value="123"/>
一检查按钮
<input type="button" onclick="checkPass()" name="txt2"="检查"/>
2、
function checkPass(){
var psd1=document.getElementById("psd1").value;
var psd2=document.getElementById("psd2").value;
if(psd1!=psd2){
alert("密码不一致，请重新输入！");
return false;
}
return true;
}
1、页面引用xx.js
页面在俩文件框-->
密码：<input
type="text"
name="psd1"
value="123456"/>
重复密码：<input
type="text"
name="psd2"
value="123"/>
一检查按钮
<input
type="button"
onclick="checkPass()"
name="txt2"="检查"/>
2、
function
checkPass(){
var
psd1=document.getElementById("psd1").value;
var
psd2=document.getElementById("psd2").value;
if(psd1!=psd2){
alert("密码不一致，请重新输入！");
return
false;
}
return
true;
}
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