javascript Jquery，取回所有元素的 ID 字符串列表，ID 以字符串开头？
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Jquery, getting back list of ID strings of all elements with ID's that "begin with" a string?
提问by Rick
I'm not a Javascript guru as I do more server-side work so am struggling with this. I have found bits and pieces of how to do this. Basically, I have a series of elements that have ids beginning with the string "tagRow_" and I need to get back a list of all of the actual element ids as I need not just the element but also the element's id as I need to parse the unique ending for each on the server-side to determine what it corresponds to.
我不是 Javascript 大师，因为我做了更多的服务器端工作，所以我正在为此苦苦挣扎。我已经找到了如何做到这一点的点点滴滴。基本上，我有一系列元素的 id 以字符串“tagRow_”开头，我需要取回所有实际元素 id 的列表，因为我不仅需要元素，还需要元素的 id，因为我需要解析服务器端每个的唯一结尾，以确定它对应的内容。
I found the code below to get all elements but am not sure what it is returning as far as a list or what, if anyone can offer advice how to return just a list of string id names I would appreciate it. Thanks
我找到了下面的代码来获取所有元素，但我不确定它返回的是什么列表或什么，如果有人能提供建议如何只返回一个字符串 id 名称列表，我将不胜感激。谢谢
EDIT: I actually need to do this with a radio input field, it was by mistake I put a DIV in my own example. It works fine for a DIV but is not working properly for a radio input like below:
编辑：我实际上需要使用无线电输入字段来执行此操作，我在自己的示例中错误地放置了 DIV。它适用于 DIV，但不适用于如下所示的无线电输入：
<input id="tagRow_ddd" type="radio" value="h">
<input id="tagRow_ddd" type="radio" value="p">
<input id="tagRow_ddd" type="radio" value="r">
<input id="tagRow_ddd" type="radio" value="c">
$("input[id^='tagRow_']").each(function() {
var id = this.id,
idNumber = id.replace(/\D+/, '');
document.body.innerHTML += idNumber + '<br />';
});
回答by Loktar
回答by GregL
Try the following:
请尝试以下操作：
var ids = $("div[id^='tagRow_']").map(function() {
return this.id;
}).get();
This returns an array of all the IDs. More information from this post: Use jQuery to extract data from HTML lists and tables.
这将返回所有 ID 的数组。来自这篇文章的更多信息：使用 jQuery 从 HTML 列表和表格中提取数据。
回答by Mike Lewis
$("div[id^=tagRow_]").each()....
example:
例子：
$("div[id^='tagRow_']").each(function() {
alert(this.id);
});
回答by alex
回答by Haochi
That will return a list of matching DOM elements (as jQuery objects). So you will have to loop through it and put the ids in a separate array.
这将返回匹配 DOM 元素的列表（作为 jQuery 对象）。所以你必须遍历它并将 id 放在一个单独的数组中。
var matching_els = $("div[id^='tagRow_']"), ids = [];
for(var i=0; i<matching_els.length; i++){
ids.push(matching_els[i].attr("id");
}
// send ids back to server
