将表单数据序列化为 JSON [英] Serialize form data to JSON

问题描述

我想对 Backbone.js 模型中的表单进行一些服务器前验证.为此，我需要将用户从表单中输入的内容转化为可用数据.我找到了三种方法来做到这一点:

1. var input = $("#inputId").val();
2. var input = $("form.login").serialize();
3. var input = $("form.login").serializeArray();

不幸的是，没有一个提供我需要的良好的可恢复和可开发的 JSON 对象.我已经查看了关于 Stack Overflow 的几个问题，但我只找到了一些额外的库.

Underscore.js，当前的 jQuery 或 Backbone.js 不提供辅助方法吗?>

我无法想象没有人要求这样的功能.

HTML

<label for="_user_name">用户名:</label><input type="text" id="_user_name" name="user[name]" value="dev.pus"/><label for="_user_pass">密码:</label><input type="password" id="_user_pass" name="user[pass]" value="1234"/><button type="submit">登录</button></表单>

JavaScript

var formData = $("form.login").serializeObject();控制台日志(表单数据)；

输出

<代码>{"name": "dev.pus",通过":1234"}

Backbone.js 模型

var user = new User(formData);用户保存()；

解决方案

这是这个用例的函数:

function getFormData($form){var unindexed_array = $form.serializeArray();var indexed_array = {};$.map(unindexed_array, function(n, i){indexed_array[n['name']] = n['value'];});返回 indexed_array;}

用法:

var $form = $("#form_data");var data = getFormData($form);

I want to do some pre-server-validation of a form in a Backbone.js model. To do this I need to get the user input from a form into usable data. I found three methods to do this:

1. var input = $("#inputId").val();
2. var input = $("form.login").serialize();
3. var input = $("form.login").serializeArray();

Unfortunately, none of the provide a good reabable and developable JSON object which I require. I already looked through several questions on Stack Overflow, but I found only some extra libraries.

Doesn't Underscore.js, the current jQuery or Backbone.js provide a helper method?

I can't imagine there is no request for such a function.

HTML

<form class="login">
    <label for="_user_name">username:</label>
    <input type="text" id="_user_name" name="user[name]" value="dev.pus" />
    <label for="_user_pass">password:</label>
    <input type="password" id="_user_pass" name="user[pass]" value="1234" />
    <button type="submit">login</button>
</form>

JavaScript

var formData = $("form.login").serializeObject();
console.log(formData);

Outputs

{
    "name": "dev.pus",
    "pass": "1234"
}

Backbone.js model

var user = new User(formData);
user.save();

解决方案

Here's a function for this use case:

function getFormData($form){
    var unindexed_array = $form.serializeArray();
    var indexed_array = {};

    $.map(unindexed_array, function(n, i){
        indexed_array[n['name']] = n['value'];
    });

    return indexed_array;
}

Usage:

var $form = $("#form_data");
var data = getFormData($form);

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