无法通过ajax将javascript对象传递给php [英] cannot pass a javascript object to php via ajax

问题描述

我在javascript中创建了一个新数组，我正在从函数中添加值，然后将数组传递给ajaxCall函数，我尝试将其转换为json并通过ajax将其发送到php文件，但变量json总是空的。我一直在阅读很多关于如何通过ajax发送javascript_encoded的javascript对象，看起来这是这样做的方法，但显然我没有readed enought或者有一些我一直在想的东西。无论如何我是javascript中的新手，任何帮助都会被贬低。

I've created a new array in javascript and I'm adding values to it indexes from a function an then passing the array to the ajaxCall function were I try to convert it to json and send it to a php file via ajax, but the variable json is allways empty. I've been reading a lot about how to send javascript objects json_encoded via ajax and looks like this is the way to do it, but obviously I haven't readed enought or there is something I've been missing. Anycase I'm newbie in javascript and any help would be apreciated.

    function createArray()
    {
        var advancedFormVars = new Array();
        advancedFormVars['checkbox1'] = document.getElementById('OfferID').value;  
        advancedFormVars['checkbox2'] =document.getElementById('offerName').value;

    AjaxCall(advancedFormVars);
    }
    function AjaxCall(advancedFormVars){
    var json = new Array();
    json = JSON.stringify(advancedFormVars); //in debuger it shows me this as content of json variable--> [] but advancedFormVars is not empty

$.ajax({
        url : 'AL_loadForm.php',
        type : 'POST',
        data : {
            json : json 
        },
        dataType:'json',
        success : function(data) {
            alert(data);
    }
...

推荐答案

您正在尝试使用您的阵列作为哈希，所以没有设置值..

You are trying to use your array as a hash, so the values are not being set..

而不是设置

var advancedFormVars = new Array（）;

尝试设置

var advancedFormVars = {};

示例

JS：

var advancedFormVars = {};
advancedFormVars['checkbox1'] = 'valueA';
advancedFormVars['checkbox2'] = 'valueB';

var json = JSON.stringify(advancedFormVars);

console.log(json); //{"checkbox1":"valueA","checkbox2":"valueB"}

PHP

<?php
$json = '{"checkbox1":"valueA","checkbox2":"valueB"}';
$obj = json_decode($json);
var_dump($obj);
/*
    object(stdClass)#1 (2) {
      ["checkbox1"]=>
        string(6) "valueA"
      ["checkbox2"]=>
        string(6) "valueB"
    }
*/
?>

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