JS - 拆分字符串并循环结果 [英] JS - Splitting a string and looping through results

问题描述

在JS中，我在解决如何拆分来自AJAX调用的字符串时遇到了麻烦。

In JS, I'm having trouble working out how to split a string coming from an AJAX call.

这是我到目前为止所做的：

This is what I have so far:

xmlhttp.onreadystatechange = function()
{
if (xmlhttp.readyState==4 && xmlhttp.status==200)
{
feedUpdateResponse = xmlhttp.responseText;
/////...split script.../////
}
}
xmlhttp.open("GET","https://myDomain.com/myScript.aspx",true);
xmlhttp.send();

你有/////...split脚本... /////在上面的脚本中，我需要添加一个小函数来分割从我的AJAX调用返回的字符串。

Where you have /////...split script...///// in my script above, I need to add a little function that splits the string returned from my AJAX call.

该字符串只包含DIV的名称，如下所示：

The string simply contains names of DIVs, like this:

feedUpdateResponse = "div1/div2/div3/div4"

我想首先用斜杠（/）拆分字符串，然后运行不同值的循环，然后对页面上的元素进行处理。

I would like to first split the string by its slashes (/) and run a loop through the different values and do stuff to those elements on my page.

为了说明我需要实现的目标，我给出了这个ASP和ASP混合的例子。 JS - 这是我可能描述它的唯一方式（并表明我有过尝试）:)）

To give an idea of what I need to achieve, I have given this example which is a mix of ASP & JS - it's the only way I can possibly describe it (and show that I've had an attempt) :)

MyArray = Split(feedUpdateResponse,"/")
For Each X In MyArray
documentGetElementById('updateAvailable_'+x).style.visibility="visible";
Next

在我的页面上，我有一个ASP脚本，可以生成jquery轮播，全部包含在单独的DIV。 DIV被命名为DIV1，DIV2等。例如，在DIV1中，是一个名为 updateAvailable_div1 的文本元素，它将提醒用户这个源有新的照片，请点击刷新按钮。

On my page I have an ASP script that produces jquery carousels, all contained by separate DIVs. The DIVs are named DIV1, DIV2 etc. Inside DIV1, for example, is a text element called updateAvailable_div1 which will alert the user "There are new photos available for this feed, please click the refresh button".

有人可以向我解释我如何改变上面的例子来使用JS吗？只需要将字符串拆分为数组并循环遍历拆分值...

Could somebody please explain to me how I can change my example above to work in JS? Just need to split the string into an array and loop through the split values...

推荐答案

您可以使用 .split（） 在指定字符上拆分字符串，并将结果作为数组返回。那么这只是循环数组的问题：

You can use .split() to split a string on a specified character with the results returned as an array. So then it's just a matter of looping through the array:

// given your existing variable
// feedUpdateResponse = "div1/div2/div3/div4" as set in the
// code in the question, add this:

var a = feedUpdateResponse.split("/"),
    i;

for (i = 0; i < a.length; i++) {
    document.getElementById("updateAvailable_" + a[i]).style.visibility
                                                                 = "visible";
}

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