Javascript/Jquery抓取不同数字的ID
Javascript/Jquery抓取不同数字的ID
提问于 2016-09-09 05:06:50
所以我用这个来改变属性
$('#ctl00_ContentPlaceHolder1_ctl14_ucCal_hlRss').attr({
title: "Subscribe via RSS"
});
$('#ctl00_ContentPlaceHolder1_ctl14_ucCal_hlRss img').attr({
title: "Subscribe via RSS",
alt: "Subscribe via RSS"
});它运行良好，但我需要添加到多个不同的网站，其中的"ctl14“将改变(例如在另一个网站上，它将是"ctl60")。有没有办法修改它，以确保它选择"ctl##“之后的任何数字，然后继续使用_ucCal_hlRss和_ucCal_hlRss img？
回答 2
Stack Overflow用户
回答已采纳
发布于 2016-09-09 05:15:21
$('[id^=ctl00_ContentPlaceHolder1_ctl][id$=_ucCal_hlRss]') 尝试这个选择器，它将获取ID以ctl00_ContentPlaceHolder1_ctl开头、以_ucCal_hlRss结尾的所有元素。
Stack Overflow用户
发布于 2016-09-09 05:21:02
//function way
function subscribe_title(n) {
$('#ctl00_ContentPlaceHolder1_ctl' + n + '_ucCal_hlRss').attr({
title: "Subscribe via RSS"
}).children('img').attr({
title: "Subscribe via RSS",
alt: "Subscribe via RSS"
});
} // end function;
//loop method, change the 30 to whatever number you have;
for (var i = 0; i < 30; i++) {
$('#ctl00_ContentPlaceHolder1_ctl' + i + '_ucCal_hlRss').attr({
title: "Subscribe via RSS"
}).children('img').attr({
title: "Subscribe via RSS",
alt: "Subscribe via RSS"
});
} // end for loop;
//using a pre-fetched array of numbers;
var nums = [100, 50, 16, 2];
for (var i = 0; i < nums.length; i++) {
$('#ctl00_ContentPlaceHolder1_ctl' + nums[i] + '_ucCal_hlRss').attr({
title: "Subscribe via RSS"
}).children('img').attr({
title: "Subscribe via RSS",
alt: "Subscribe via RSS"
});
}
//perhaps the easiest way
$('div[id^=ctl00_ContentPlaceHolder1_ctl').attr({
title: "Subscribe via RSS"
}).children('img').attr({
title: "Subscribe via RSS",
alt: "Subscribe via RSS"
});<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<div id="ctl00_ContentPlaceHolder1_ctl10_ucCal_hlRss">
100
<img src="//placekitten.com/300x300/" />
</div>
<div id="ctl00_ContentPlaceHolder1_ctl12_ucCal_hlRss">
100
<img src="//placekitten.com/300x300/" />
</div>
<div id="ctl00_ContentPlaceHolder1_ctl12_ucCal_hlRss">
100
<img src="//placekitten.com/300x300/" />
</div>
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原文链接：
https://stackoverflow.com/questions/39400216
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