js中使用正則表達(dá)式查找字母和數(shù)字的方法

!DOCTYPE HTML>
html >
head>
meta charset="UTF-8">
title>/title>
script type="text/javascript">
window.onload=function(){
localStorage.fiveData="你好啊 世界";
//alert(localStorage.fiveData);
//var reg=/\d+/g;//匹配任意長度數(shù)字

var reg=/[a-z,A-Z]/g;//匹配任意字母
var str="aajdaf1232jadlfjakdjfalkjlakfj2131l34kalfsjaafaqejqe231wk";
var t=str.match(reg);
for(var c in t){
console.log(t[c]);
}

}
/script>
/head>
body>
/body>
/html>

function CheckPassWord(password) {//密碼必須包含數(shù)字和字母
  var str = password;
  if (str == null || str.length  8) {
    return false;
  }
  var reg = new RegExp(/^(?![^a-zA-Z]+$)(?!\D+$)/);
  if (reg.test(str))
    return true;
}

function CheckPassWord(password) {//必須為字母加數(shù)字且長度不小于8位
  var str = password;
  if (str == null || str.length 8) {
    return false;
  }
  var reg1 = new RegExp(/^[0-9A-Za-z]+$/);
  if (!reg1.test(str)) {
    return false;
  }
  var reg = new RegExp(/[A-Za-z].*[0-9]|[0-9].*[A-Za-z]/);
  if (reg.test(str)) {
    return true;
  } else {
    return false;
  }
}