jQuery 将每个孩子（'id'）放入数组或字符串中
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get each child('id') into array or string
提问by Daniel Hunter
I need to create a comma separated value for a hidden input created from a series of div id's
我需要为从一系列 div id 创建的隐藏输入创建一个逗号分隔值
<div id="main">
<div id="A"></div>
<div id="B"></div>
<div id="C"></div>
</div>
<input type="hidden" id="children"/>
I want to use jquery but having trouble with the function
我想使用 jquery 但在功能上有问题
function update_input(main){
var array = new Array();
$('#'+main).children('id').each(function(){
array.push($(this).attr('div'));
});
input_value = array.toString();
$('#children').val(input_value);
}
This is not right
这个不对
回答by Frenchi In LA
$('div','#main').each(function(){
array.push($(this).attr('id'));
});
回答by ipr101
You could use map-
你可以使用map-
?var arr = $("#main > div").map(function() {return this.id});
$('#children').val(arr.get().join(","));
The code above relies on your HTML being changed to -
上面的代码依赖于您的 HTML 被更改为 -
<div id="main">
<div id="A"></div>
<div id="B"></div>
<div id="C"></div>
</div>?
The mapfunction will return a jQuery object containing the ids of each div contained within the 'main' div. You can the call the get()function to turn the object returned by the mapfunction into a Javascript array, and then use the joinfunction to return a comma delimited string.
该map函数将返回一个 jQuery 对象，其中包含“main”div 中包含的每个 div 的 id。您可以调用该get()函数将函数返回的对象map转换为Javascript 数组，然后使用该join函数返回逗号分隔的字符串。
Demo - http://jsfiddle.net/8tZXH/1
回答by Daniel Hunter
var ids = $('#main > td').map(function(){
return this.id
}).toArray();
$('#children').val(ids);
回答by Steve
You probably want to use children('div'), not children('id')
您可能想要使用children('div')，而不是children('id')
