本文实例为大家分享了js正则表达式验证输入合法性的具体代码,供大家参考,具体内容如下
function confirmName(){
var name=document.getElementById("user_name");
name.onblur=function(){
if((name.value).length!=0){
reg=/^[\u4e00-\u9fa5_a-zA-Z0-9-]{1,16}$/g;
if(!reg.test(name.value)){
alert("对不起,输入的用户名限16个字符,支持中英文、数字、减号或下划线 ");
}
}
};
}
function confirmEmail(){
var email=document.getElementById("useremail");
email.onblur=function(){
if((email.value).length!=0){
reg=/^([a-zA-Z0-9-])+@([a-zA-Z0-9-])+(.[a-zA-Z0-9-])+/ ;
if(!reg.test(email.value)){
alert("对不起,您输入的邮箱格式不正确!");
}
}
};
}
function confirmPassword(){
var password=document.getElementById("user_password");
password.onblur=function(){
if((password.value).length!=0){
reg=/^(\w){6,20}$/;
if(!reg.test(password.value)){
alert("对不起,您输入的密码格式不正确!");
}
}
};
}
function confiemPasswordAgin(){
var againpassword=document.getElementById("user_password_confirmation");
var password=document.getElementById("user_password");
againpassword.onblur=function(){
// alert(againpassword.value);
if(password.value.length!=againpassword.value.length){
alert("密码输入不匹配,请重新输入");
}
if(password.value.indexOf(againpassword.value)==-1){
alert("密码输入不匹配,请重新输入");
}
};
}
window.onload=function(){
confirmName();
confirmEmail();
confirmPassword();
confiemPasswordAgin();
};