是否有一种简单的单行方式来获取表单的数据，就像以经典的仅html方式提交表单一样?
例如:
<form>
<input type="radio" name="foo" value="1" checked="checked" />
<input type="radio" name="foo" value="0" />
<input name="bar" value="xxx" />
<select name="this">
<option value="hi" selected="selected">Hi</option>
<option value="ho">Ho</option>
</form>
输出:
{
"foo": "1",
"bar": "xxx",
"this": "hi"
}
像这样的东西太简单了，因为它没有(正确地)包括文本区域，选择，单选按钮和复选框:
$("#form input").each(function () {
data[theFieldName] = theFieldValue;
});
基于neuront的响应，我创建了一个简单的JQuery方法，在键值对中获取表单数据，但它适用于多选择和name='example[]'的数组输入。
下面是它的用法:
var form_data = $("#form").getFormObject();
您可以在下面找到它的定义及其工作方式的示例。
// Function start
$.fn.getFormObject = function() {
var object = $(this).serializeArray().reduce(function(obj, item) {
var name = item.name.replace("[]", "");
if ( typeof obj[name] !== "undefined" ) {
if ( !Array.isArray(obj[name]) ) {
obj[name] = [ obj[name], item.value ];
} else {
obj[name].push(item.value);
}
} else {
obj[name] = item.value;
}
return obj;
}, {});
return object;
}
// Function ends
// This is how it's used
$("#getObject").click( function() {
var form_data = $("#form").getFormObject();
console.log(form_data);
});
/* Only to make view better ;) */
#getObject {
padding: 10px;
cursor:pointer;
background:#0098EE;
color:white;
display:inline-block;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/2.1.3/jquery.min.js"></script>
<form id="form">
<input type="text" name="text" value="Hola amigo" />
<input type="text" name="text_array[]" value="Array 1" />
<input type="text" name="text_array[]" value="Array 2" />
<input type="text" name="text_array[]" value="Array 3" />
<select name="multiselect" multiple>
<option name="option1" selected> option 1 </option>
<option name="option2" selected> option 2 </option>
</select>
<input type="checkbox" name="checkbox" value="checkbox1" checked/>
<input type="checkbox" name="checkbox" value="checkbox2" checked/>
<input type="radio" name="radio" value="radio1" checked/>
<input type="radio" name="radio" value="radio2"/>
</form>
<div id="getObject"> Get object (check the console!) </div>
你可以使用这个函数从表单中获取一个对象或JSON。
使用它:
var object = formService.getObjectFormFields（“#idform”）;
function getObjectFormFields(formSelector)
{
/// <summary>Função que retorna objeto com base nas propriedades name dos elementos do formulário.</summary>
/// <param name="formSelector" type="String">Seletor do formulário</param>
var form = $(formSelector);
var result = {};
var arrayAuxiliar = [];
form.find(":input:text").each(function (index, element)
{
var name = $(element).attr('name');
var value = $(element).val();
result[name] = value;
});
form.find(":input[type=hidden]").each(function (index, element)
{
var name = $(element).attr('name');
var value = $(element).val();
result[name] = value;
});
form.find(":input:checked").each(function (index, element)
{
var name;
var value;
if ($(this).attr("type") == "radio")
{
name = $(element).attr('name');
value = $(element).val();
result[name] = value;
}
else if ($(this).attr("type") == "checkbox")
{
name = $(element).attr('name');
value = $(element).val();
if (result[name])
{
if (Array.isArray(result[name]))
{
result[name].push(value);
} else
{
var aux = result[name];
result[name] = [];
result[name].push(aux);
result[name].push(value);
}
} else
{
result[name] = [];
result[name].push(value);
}
}
});
form.find("select option:selected").each(function (index, element)
{
var name = $(element).parent().attr('name');
var value = $(element).val();
result[name] = value;
});
arrayAuxiliar = [];
form.find("checkbox:checked").each(function (index, element)
{
var name = $(element).attr('name');
var value = $(element).val();
result[name] = arrayAuxiliar.push(value);
});
form.find("textarea").each(function (index, element)
{
var name = $(element).attr('name');
var value = $(element).val();
result[name] = value;
});
return result;
}
你们都不完全正确。你不能写:
formObj[input.name] = input.value;
因为这样，如果你有一个多选列表，它的值将被最后一个覆盖，因为它被传输为:"param1": "value1"， "param1": "value2"。
所以，正确的方法是:
if (formData[input.name] === undefined) {
formData[input.name] = input.value;
}
else {
var inputFieldArray = $.merge([], $.isArray(formData[input.name]) ? formData[input.name] : [formData[input.name]]);
$.merge(inputFieldArray, [input.value]);
formData[input.name] = $.merge([], inputFieldArray);
}
这是我的香草JS版本(在Chrome上测试)
适用于:
name = "输入"
Name ="form[Name]"(创建一个对象)
Name ="checkbox[]"(创建一个数组对象)
Name ="form[checkbox][]"(创建一个数组)
Name ="form[select][Name]"(创建一个只包含所选值的对象)
/**
* Get the values from a form
* @param formId ( ID without the # )
* @returns {object}
*/
function getFormValues( formId )
{
let postData = {};
let form = document.forms[formId];
let formData = new FormData( form );
for ( const value of formData.entries() )
{
let container = postData;
let key = value[0];
let arrayKeys = key.match( /\[[\w\-]*\]/g ); // Check for any arrays
if ( arrayKeys !== null )
{
arrayKeys.unshift( key.substr( 0, key.search( /\[/ ) ) ); // prepend the first key to the list
for ( let i = 0, count = arrayKeys.length, lastRun = count - 1; i < count; i++ )
{
let _key = arrayKeys[i];
_key = _key.replace( "[", '' ).replace( "]", '' ); // Remove the brackets []
if ( _key === '' )
{
if ( ! Array.isArray( container ) )
{
container = [];
}
_key = container.length;
}
if ( ! (_key in container) ) // Create an object for the key if it doesn't exist
{
if ( i !== lastRun && arrayKeys[i + 1] === '[]' )
{
container[_key] = [];
}
else
{
container[_key] = {};
}
}
if ( i !== lastRun ) // Until we're the last item, swap container with it's child
{
container = container[_key];
}
key = _key;
}
}
container[key] = value[1]; // finally assign the value
}
return postData;
}
