什么是“^ =” （caret equals）在jquery中意味着什么？ [英] What does "^=" (caret equals) mean in jquery?

问题描述

以下内容隐藏了ID中包含 Stud_Btn 的图片。

The following hides images that have Stud_Btn in their id.

$('img[id^="Stud_Btn"]').hide();

即使我有 Stud_Btn1234 和 Stud_Btn234 ，它仍会隐藏它。 ^究竟意味着什么？

even if I have Stud_Btn1234 and Stud_Btn234, it will still hide it. What does "^" really mean?

它不仅可以用于比较吗？或者它有其他用途吗？

Can it not only be used for comparison? Or does it have other uses?

推荐答案

[attr ^ = val] 一个CSS选择器，意思是：

[attr^=val] a CSS selector that means:

具有名为 attr 属性的元素以 val 开头的值。

Element that has an attribute named attr with a value that starts with val.

类似于 [attr $ = val] ，相反，查找以 val 结尾的属性。

It's similar to [attr$=val], which does the opposite, looking for an attribute ending with val.

这篇关于什么是“^ =” （caret equals）在jquery中意味着什么？的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！