从Javascript调用php函数并在php代码中使用javascript var

Question

JavaScript

function calcPrimesLoop() {
    var primes = document.getElementById('primes');
    primes.appendChild(document.createTextNode('
'+this.prime.nextPrime()));

    $.ajax({
        url: "/test.php",
        type: "post",
        data: {prime: this.prime.nextPrime()},
        success: function(data) {
        } 
    });

    calcPrimesDelay = setTimeout('calcPrimesLoop()', this.delay);
}

Php

<?php
    $content = $_POST['prime'];

    $fn = "content.txt";


    $content = stripslashes('prime'"
");

    $fp = fopen($fn,"a+") or die ("Error opening file in write mode!");

    fputs($fp,$content);


    fclose($fp) or die ("Error closing file!");


?>

So this is all the relevant scripting I think. I have a script that can get prime numbers and it works perfectly. But now I want to record these numbers on a text file. This is how I am trying to do it but I am having no success at all. Thank you. The issue is the numbers aren't being recorded.

I added an alert the Ajax is working. But when I add a form to the php script and submit it that works. So the ajax and php scripts are not working together as such.

Answer 1

You should read up about AJAX and see how you can pass information to a serverside page using Javascript and retrieve the return value.

http://www.w3schools.com/ajax/default.asp https://www.youtube.com/watch?v=qqRiDlm-SnY