jQuery选择器:如何将值从var colorid传递到选择器? [英] jQuery selector: How can I pass value from var colorid into selector?

问题描述

var obj = document.getElementById("<%= tbUpdate.ClientID %>");
    var colorid = obj.value;
    $('.shade[colorId=colorid]').addClass('active');

问题在于colorId = colorid.我认为jQuery认为它是字符串.如何将值从var colorid传递到选择器?

the problem is with the colorId=colorid. I think jQuery thinks that it's string. How can I pass value from var colorid into selector?

推荐答案

$('.shade[colorId=' + colorid + ']');

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