Javascript - 在隐藏字段中存储对象数组 [英] Javascript - Storing array of objects in hidden field

问题描述

我需要在隐藏字段中存储一些输入，所以当我打印 post-request 时，我得到:

I need to store some input in a hidden field, so when I print the post-request, I get:

Array ( [0]=>1 [1]=>2 [2]=>3 )

我已经试过了:

var elems = [];
elems.push['1'];
elems.push['2'];
elems.push['3'];

$('#input_hidden_field').val(elems);

但它不起作用，有人可以帮助我吗?

But it does not work, anybody could help me with this?

推荐答案

您可以将数组解析为 JSON 字符串来存储它:

You can parse your array into a JSON-string to store it:

.push() 是一个函数，因此它需要 () 而不是 [] 数组语法.

.push() is a function, therefore it needs () and not the [] array-syntax.

var elems = [];
elems.push('1');
elems.push('2');
elems.push('3');

$('#input_hidden_field').val(JSON.stringify(elems)); //store array

var value = $('#input_hidden_field').val(); //retrieve array
value = JSON.parse(value);

要创建一个对象，只需更改 elems 的定义和值的存储:

To create an object just change the definition of elems and the storage of the values:

var elems = {};
elems[0] = '1';
elems[1] = '2';
elems[2] = '3';

演示

参考

.stringify()

.parse()

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