传入一个javascript元素id到php - passing a javascript element id into php

passing a javascript element id into php

本文关键字：元素 javascript id php 一个 | 更新日期: 2023-09-27

我得到一个javascript函数，使日期和时间自动更新。

下面是我从这个URL找到的脚本:http://jsfiddle.net/pLsgJ/1/

setInterval(function() {
    var currentTime = new Date ( );    
    var currentHours = currentTime.getHours ( );   
    var currentMinutes = currentTime.getMinutes ( );   
    var currentSeconds = currentTime.getSeconds ( );
    currentMinutes = ( currentMinutes < 10 ? "0" : "" ) + currentMinutes;   
    currentSeconds = ( currentSeconds < 10 ? "0" : "" ) + currentSeconds;    
    var timeOfDay = ( currentHours < 12 ) ? "AM" : "PM";    
    currentHours = ( currentHours > 12 ) ? currentHours - 12 : currentHours;    
    currentHours = ( currentHours == 0 ) ? 12 : currentHours;    
    var currentTimeString = currentHours + ":" + currentMinutes + ":" + currentSeconds + " " + timeOfDay;
    document.getElementById("timer").innerHTML = currentTimeString;
}, 1000);

然后显示结果，我们必须像这样用HTML调用id:

<div id="timer"></div>

但是我想把结果像这样传递给PHP:

$timer = $_GET['timer'];

但是它完全失败了。有可能将javascript元素id传递到php吗?我该怎么做呢?

请帮帮我

在表单

中创建隐藏字段

<form id= "myform">
    <input type="hidden" name="timer" id="timer" value="">
</form>

JS: -

$('#timer').val() = currentTimeString;
$('form#myform').submit();  // for submit after value set may be work not tested

并且在提交表单时，您将得到:-

$timer = $_GET['timer'];

Javascript变量是本地创建的。在你的电脑上。PHP变量是在服务器上创建的。

要将javascript值从本地客户端发送回服务器，您需要一个表单或ajax请求。

这是一个简单的jQuery Ajax请求:

$.get( "example.php", { timervalue: mytimevalue } );

使用这个脚本，你可以发送你的本地"mytimevalue"到你的服务器。

在表单中发送它是一个选项，如前所述，或者通过使用ajax。但最简单的方法是用JS将其设置为cookie，然后用PHP读取cookie。

document.cookie="timer=" + timer;

PHP

$timer = $_COOKIE["timer"];

在这里我将为您添加一行:

setInterval(function() {
  var currentTime = new Date ( );    
  var currentHours = currentTime.getHours ( );   
  var currentMinutes = currentTime.getMinutes ( );   
  var currentSeconds = currentTime.getSeconds ( );
  currentMinutes = ( currentMinutes < 10 ? "0" : "" ) + currentMinutes;   
  currentSeconds = ( currentSeconds < 10 ? "0" : "" ) + currentSeconds;    
  var timeOfDay = ( currentHours < 12 ) ? "AM" : "PM";    
  currentHours = ( currentHours > 12 ) ? currentHours - 12 : currentHours;    
  currentHours = ( currentHours == 0 ) ? 12 : currentHours;    
  var currentTimeString = currentHours + ":" + currentMinutes + ":" + currentSeconds + " " + timeOfDay;
  document.getElementById("timer").innerHTML = currentTimeString;
  document.cookie="timer=" + currentTimeString;
}, 1000);