jQuery“属性包含"选择器具有动态值 [英] jquery 'attribute contains' selector with a dynamic value

问题描述

假设我有一个变量questionId，它是一个整数，我想查找tr元素，这些元素的id中有片段("question_"+questionId).我怎样才能做到这一点?我以为我可以使用jQuery 属性包含"选择器来做到这一点.

Let's say that i have a variable questionId which is an integer, and i want to find tr elements that have the fragment ("question_"+questionId) in their id. How can i do this? I thought that i would be able to do it with the jquery 'attribute contains' selector.

例如，这适用于非动态值

Eg, this works, for a non-dynamic value,

$("tr[id*='quiz_question_7674']")

但是，我不知道如何在其中插入变量值.例如，这不起作用:

but, i can't work out how to plug the variable value in there. This doesn't work for example:

questionId = 7674;
$("tr[id*='quiz_question_'+questionId]")

有任何想法吗?有没有比属性包含"更好的方法呢?我有种明显的缺憾.

Any ideas anyone? Is there a better way than 'attribute contains' to do it? I have the feeling i'm missing something obvious.

谢谢，最大

编辑-已解决. h，我确实缺少明显的东西.我一直忘了它只是一个字符串，仅此而已:

EDIT - SOLVED. doh, i am indeed missing something obvious. I keep forgetting that it's just a string, nothing more:

$("tr [id * ='quiz_question _" + questionId +']")

$("tr[id*='quiz_question_"+questionId+"']")

推荐答案

您遇到错误:

var questionId = 7674;
$("tr[id*='quiz_question_" + questionId + "']");

注意:

1. 请使用var声明变量.
2. questionId是一个变量.它不是选择器的一部分.您应该将questionId连接到字符串.

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