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//在字符串中执行查找
function isDisgit(s){
	var reg = /^[0-9]{1,20}$/;
	var result = reg.exec(s);
	//如果格式不正确,返回null ,否则返回 该字符串
	alert(result);
}
//执行字符串分割
function splitString(){
	var r,reg;	//声明变量
	reg = /abc/;	//创建正则模式
	var s = "afdsafdsafdasfasffafafa";
	r = s.split(reg);	//分割字符串
	for(var p in r ){
		alert(r[p]);
	}
}
//email 验证
function test_email(StrEmail){
	var myReg = /^[_a-z0-9]+@([_a-z0-9]+\.)+[a-z0-9]{2,3}$/;
	if(myReg.text(StrEmail)){
		return true;
	}else{
		return false;
	}
}
//电话号码验证
function isTel(s){
	var patrn = /^(\d{3}-)?\d{8}|(\d{4}-)(\d{7,8})$/;
	if(!patrn.text(s){
		return false;
	}else{
		return true;
	}
}
//验证手机号码
function isMobil(s){
	var patrn = /^1[3,5]\d{9}$/;
	if(!patrn.text(s){
		return false;
	}else{
		return true;
	}
}
//验证邮编
function idPostalCode(s){
	var patrn = /^d{6}$/;
	if(!patrn.text(s){
		return false;
	}else{
		return true;
	}
}
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原文地址:http://www.cnblogs.com/Xiawu168/p/4759055.html