How to get value in js in php

php has the following methods to obtain the value of js:

1. PHP echoes out the js file to get the return value, and outputs the parameters in the gamemap.js file.

echo &#39;<script type="text/javascript" src="gamemap.js"></script>&#39;;

2. Call the js method directly on the page, and get the parameters after the getAddress() method is executed.

echo "<script type=&#39;text/javascript&#39;>getAddress($lat,$lon);</script>";

Related recommendations: "php Getting Started Tutorial"

3. The most appropriate method is to use ajax to pass the value.

$('body').on('click','.a1',function(){
  var t = $(this);                        //js获取参数
  var url = "users_guanzhu.php";
  var id = $(this).attr('uid');
  var userid = $(this).attr('userid');
  var st = $(this).attr('st');
  var setting = {
        url: url,       //设置传值的路径
        type: 'post',   //设置传值方式
        async: true,
        data: {           //传值数据
          st: st,
          id: id,
          userid:userid
        },
        success:function (st0) {//如果ajax传值成功，执行的代码，此代码为修改前端页面文字
          if (st0) {
            var h =t.html();
            if( h=='同意'){
              t.html('不同意');}
            else{
              t.html('同意');
            }
            if(st==1){
              t.attr('st',0);
            }
            else
            {
              t.attr('st',1) ;
            }
          }
        }
        ,
        error:function (error) {  //如果出现错误，返回错误信息。
        }
        ,
        dataType:"text"
      }
      ;
  $.ajax(setting);
});

js obtains the value of php in the following ways:

<script type="text/javascript">
var arr="<?php echo $arr;?>"
</script>

The above is the detailed content of How to get value in js in php. For more information, please follow other related articles on the PHP Chinese website!