小编给大家分享一下表单格式化插件jquery.serializeJSON怎么用，相信大部分人都还不怎么了解，因此分享这篇文章给大家参考一下，希望大家阅读完这篇文章后大有收获，下面让我们一起去了解一下吧！
使用jquery.serializeJSON，可以在基于jQuery或者Zepto的页面中，调用 .serializeJSON() 方法来序列化form表单的数据成JS对象。
使用
只需要在jQuery或者Zepto时候引入即可
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript" src="jquery.serializejson.js"></script>示例
HTML form（支持input、textarea、select等标签）
<form id="my-profile">
<!-- simple attribute -->
<input type="text" name="fullName" value="Mario Izquierdo" />
<!-- nested attributes -->
<input type="text" name="address[city]" value="San Francisco" />
<input type="text" name="address[state][name]" value="California" />
<input type="text" name="address[state][abbr]" value="CA" />
<!-- array -->
<input type="text" name="jobbies[]" value="code" />
<input type="text" name="jobbies[]" value="climbing" />
<!-- textareas, checkboxes ... -->
<textarea name="projects[0][name]">serializeJSON</textarea>
<textarea name="projects[0][language]">javascript</textarea>
<input type="hidden" name="projects[0][popular]" value="0" />
<input type="checkbox" name="projects[0][popular]" value="1" checked />
<textarea name="projects[1][name]">tinytest.js</textarea>
<textarea name="projects[1][language]">javascript</textarea>
<input type="hidden" name="projects[1][popular]" value="0" />
<input type="checkbox" name="projects[1][popular]" value="1"/>
<!-- select -->
<select name="selectOne">
<option value="paper">Paper</option>
<option value="rock" selected>Rock</option>
<option value="scissors">Scissors</option>
</select>
<!-- select multiple options, just name it as an array[] -->
<select multiple name="selectMultiple[]">
<option value="red" selected>Red</option>
<option value="blue" selected>Blue</option>
<option value="yellow">Yellow</option>
</select>
</form>javascript：
$('#my-profile').serializeJSON();
// returns =>
{
fullName: "Mario Izquierdo",
address: {
city: "San Francisco",
state: {
name: "California",
abbr: "CA"
}
},
jobbies: ["code", "climbing"],
projects: {
'0': { name: "serializeJSON", language: "javascript", popular: "1" },
'1': { name: "tinytest.js", language: "javascript", popular: "0" }
},
selectOne: "rock",
selectMultiple: ["red", "blue"]
}serializeJSON方法返回一个JS对象，并非JSON字符串。可以使用 JSON.stringify 转换成字符串（注意IE8兼容性）。
JavaScript权威指南(第6版)(中文版) http://www.gooln.com/document/452.html
var jsonString = JSON.stringify(obj);指定数据类型
获取到的属性值一般是字符串，可以通过HTML指定类型 : type 进行强制转换。
<form>
<input type="text" name="notype" value="default type is :string"/>
<input type="text" name="string:string" value=":string type overrides parsing options"/>
<input type="text" name="excluded:skip" value="Use :skip to not include this field in the result"/>
<input type="text" name="number[1]:number" value="1"/>
<input type="text" name="number[1.1]:number" value="1.1"/>
<input type="text" name="number[other stuff]:number" value="other stuff"/>
<input type="text" name="boolean[true]:boolean" value="true"/>
<input type="text" name="boolean[false]:boolean" value="false"/>
<input type="text" name="boolean[0]:boolean" value="0"/>
<input type="text" name="null[null]:null" value="null"/>
<input type="text" name="null[other stuff]:null" value="other stuff"/>
<input type="text" name="auto[string]:auto" value="text with stuff"/>
<input type="text" name="auto[0]:auto" value="0"/>
<input type="text" name="auto[1]:auto" value="1"/>
<input type="text" name="auto[true]:auto" value="true"/>
<input type="text" name="auto[false]:auto" value="false"/>
<input type="text" name="auto[null]:auto" value="null"/>
<input type="text" name="auto[list]:auto" value="[1, 2, 3]"/>
<input type="text" name="array[empty]:array" value="[]"/>
<input type="text" name="array[list]:array" value="[1, 2, 3]"/>
<input type="text" name="object[empty]:object" value="{}"/>
<input type="text" name="object[dict]:object" value='{"my": "stuff"}'/>
</form>$('form').serializeJSON();
// returns =>
{
"notype": "default type is :string",
"string": ":string type overrides parsing options",
// :skip type removes the field from the output
"number": {
"1": 1,
"1.1": 1.1,
"other stuff": NaN, // <-- Other stuff parses as NaN (Not a Number)
},
"boolean": {
"true": true,
"false": false,
"0": false, // <-- "false", "null", "undefined", "", "0" parse as false
},
"null": {
"null": null, // <-- "false", "null", "undefined", "", "0" parse as null
"other stuff": "other stuff"
},
"auto": { // works as the parseAll option
"string": "text with stuff",
"0": 0, // <-- parsed as number
"1": 1, // <-- parsed as number
"true": true, // <-- parsed as boolean
"false": false, // <-- parsed as boolean
"null": null, // <-- parsed as null
"list": "[1, 2, 3]" // <-- array and object types are not auto-parsed
},
"array": { // <-- works using JSON.parse
"empty": [],
"not empty": [1,2,3]
},
"object": { // <-- works using JSON.parse
"empty": {},
"not empty": {"my": "stuff"}
}
}数据类型也可以指定在 data-value-type 属性中，代替 :type 标记。
<form>
<input type="text" name="number[1]" data-value-type="number" value="1"/>
<input type="text" name="number[1.1]" data-value-type="number" value="1.1"/>
<input type="text" name="boolean[true]" data-value-type="boolean" value="true"/>
<input type="text" name="null[null]" data-value-type="null" value="null"/>
<input type="text" name="auto[string]" data-value-type="auto" value="0"/>
</form>options配置
默认配置
Values始终为字符串（除非在input names使用:types ）
Keys始终为字符串（默认不自动检测是否需要转换为数组）
未选择的checkboxes会被忽略
disabled的elements会被忽略
自定义配置
包含未勾选的checkboxes
serializeJSON 支持 checkboxUncheckedValue 配置，或者可以在checkboxes添加 data-unchecked-value 属性。
默认方法：
<form>
<input type="checkbox" name="check1" value="true" checked/>
<input type="checkbox" name="check2" value="true"/>
<input type="checkbox" name="check3" value="true"/>
</form>$('form').serializeJSON();
// returns =>
{'check1': 'true'} // Note that check2 and check3 are not included because they are not checked上面的写法会忽略未勾选的复选框。如果需要包含，则可以使用以下方法：
1. 配置checkboxUncheckedValue
$('form').serializeJSON({checkboxUncheckedValue: "false"});
// returns =>
{'check1': 'true', check2: 'false', check3: 'false'}2. 添加data-unchecked-value属性
<form id="checkboxes">
<input type="checkbox" name="checked[bool]" value="true" data-unchecked-value="false" checked/>
<input type="checkbox" name="checked[bin]" value="1" data-unchecked-value="0" checked/>
<input type="checkbox" name="checked[cool]" value="YUP" checked/>
<input type="checkbox" name="unchecked[bool]" value="true" data-unchecked-value="false" />
<input type="checkbox" name="unchecked[bin]" value="1" data-unchecked-value="0" />
<input type="checkbox" name="unchecked[cool]" value="YUP" /> <!-- No unchecked value specified -->
</form>$('form#checkboxes').serializeJSON(); // Note no option is used
// returns =>
{
'checked': {
'bool': 'true',
'bin': '1',
'cool': 'YUP'
},
'unchecked': {
'bool': 'false',
'bin': '0'
// Note that unchecked cool does not appear, because it doesn't use data-unchecked-value
}
}自动检测转换类型
默认的类型为字符串 :string ，可以通过配置转换为其它类型
$('form').serializeJSON({parseNulls: true, parseNumbers: true});
// returns =>
{
"bool": {
"true": "true", // booleans are still strings, because parseBooleans was not set
"false": "false",
}
"number": {
"0": 0, // numbers are parsed because parseNumbers: true
"1": 1,
"2.2": 2.2,
"-2.25": -2.25,
}
"null": null, // "null" strings are converted to null becase parseNulls: true
"string": "text is always string",
"empty": ""
}在极少数情况下，可以使用自定义转换函数
var emptyStringsAndZerosToNulls = function(val, inputName) {
if (val === "") return null; // parse empty strings as nulls
if (val === 0) return null; // parse 0 as null
return val;
}
$('form').serializeJSON({parseWithFunction: emptyStringsAndZerosToNulls, parseNumbers: true});
// returns =>
{
"bool": {
"true": "true",
"false": "false",
}
"number": {
"0": null, // <-- parsed with custom function
"1": 1,
"2.2": 2.2,
"-2.25": -2.25,
}
"null": "null",
"string": "text is always string",
"empty": null // <-- parsed with custom function
}自定义类型
可以使用 customTypes 配置自定义类型或者覆盖默认类型（$.serializeJSON.defaultOptions.defaultTypes）
<form>
<input type="text" name="scary:alwaysBoo" value="not boo"/>
<input type="text" name="str:string" value="str"/>
<input type="text" name="number:number" value="5"/>
</form>$('form').serializeJSON({
customTypes: {
alwaysBoo: function(str) { // value is always a string
return "boo";
},
string: function(str) { // all strings will now end with " override"
return str + " override";
}
}
});
// returns =>
{
"scary": "boo", // <-- parsed with type :alwaysBoo
"str": "str override", // <-- parsed with new type :string (instead of the default)
"number": 5, // <-- the default :number still works
}忽略空表单字段
// Select only imputs that have a non-empty value
$('form :input[value!=""]').serializeJSON();
// Or filter them from the form
obj = $('form').find('input').not('[value=""]').serializeJSON();
// For more complicated filtering, you can use a function
obj = $form.find(':input').filter(function () {
return $.trim(this.value).length > 0
}).serializeJSON();使用整数keys作为数组的顺序
使用useIntKeyAsArrayIndex配置
<form>
<input type="text" name="arr[0]" value="foo"/>
<input type="text" name="arr[1]" value="var"/>
<input type="text" name="arr[5]" value="inn"/>
</form>按照默认的方法，结果为：
$('form').serializeJSON();
// returns =>
{'arr': {'0': 'foo', '1': 'var', '5': 'inn' }}使用useIntKeyAsArrayIndex可以将记过转换为数组并制定顺序
$('form').serializeJSON({useIntKeysAsArrayIndex: true});
// returns =>
{'arr': ['foo', 'var', undefined, undefined, undefined, 'inn']}默认配置Defaults
所有的默认配置均定义在 $.serializeJSON.defaultOptions，可以进行修改。
$.serializeJSON.defaultOptions.parseAll = true; // parse booleans, numbers and nulls by default
$('form').serializeJSON(); // No options => then use $.serializeJSON.defaultOptions
// returns =>
{
"bool": {
"true": true,
"false": false,
}
"number": {
"0": 0,
"1": 1,
"2.2": 2.2,
"-2.25": -2.25,
}
"null": null,
"string": "text is always string",
"empty": ""
}以上是“表单格式化插件jquery.serializeJSON怎么用”这篇文章的所有内容，感谢各位的阅读！相信大家都有了一定的了解，希望分享的内容对大家有所帮助，如果还想学习更多知识，欢迎关注编程网行业资讯频道！
