js接收post/get值

注意必须文件为.php

//先用php接收post值
<?php 
    $user_p=trim($_POST['user']);
    $pswd_p=trim($_POST['pswd']);
 ?>
//再用echo方法把值反馈给js 注意要用''包裹转成字符串
//否则出错
<script>
        var pswd='<?php echo $pswd_p ?>';
        var user='<?php echo $user_p ?>';
        console.log(user);
        console.log(pswd);
 </script>

附带接收get
方法1

function getQueryString(name) {
    var reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)", "i");
    var r = window.location.search.substr(1).match(reg);
    if (r != null) return unescape(r[2]); return null;
    }
var user=getQueryString('user');
var pswd=getQueryString('pswd');

方法2

function getPar(par){
    //获取当前URL
    var local_url = document.location.target="blank" href; 
    //获取要取得的get参数位置
    var get = local_url.indexOf(par +"=");
    if(get == -1){
        return false;   
    }   
    //截取字符串
    var get_par = local_url.slice(par.length + get + 1);    
    //判断截取后的字符串是否还有其他get参数
    var nextPar = get_par.indexOf("&");
    if(nextPar != -1){
        get_par = get_par.slice(0, nextPar);
    }
    return get_par;
}

方法3
(返回 $_GET 对象, 仿PHP模式)

var $_GET = (function(){
    var url = window.document.location.target="blank" href.toString();
    var u = url.split("?");
    if(typeof(u[1]) == "string"){
        u = u[1].split("&");
        var get = {};
        for(var i in u){
            var j = u[i].split("=");
            get[j[0]] = j[1];
        }
        return get;
    } else {
        return {};
    }
})();