这个jquery $（'。some-class'，$（'＃some-id'））是什么意思？

问题描述

我知道 context ， some-class 将在元素中使用id some- ID 。

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'。some-class'是选择符， $（'＃some-id '） is context

jQuery文档中选择器的语法是 jQuery（selector [，context]）您可以阅读更多关于选择器 如果没有上下文 $（'。some-class'）将带有文档中的所有元素-类。 使用上下文 $（'。some-class'，$（'＃some-id'））将带有元素的所有元素与id some-id 。

i know the meaning of $('.some-class') and $('#some-id'), but i do really not know the meaning of $('.some-class',$('#some-id')), hoping some one can explain it for me, many thanks.

解决方案

You have selector with context, some-class will be looked up in element with in element with id some-id.

'.some-class' is selector and $('#some-id') is context

The syntax in the jQuery documents for selector is jQuery( selector [ , context ] ) you can read more about selectors here

Without context $('.some-class') will bring all the elements in document with class some-class. With context $('.some-class', $('#some-id')) will bring all the elements with in element with id some-id.

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