＃和Jquery选择器中的点之间有什么区别？

What is the difference between the # and . (the dot) in Jquery?

＃和之间有什么区别？（点）在Jquery？

For example, I have seen

例如，我见过

$('#divName').show();

and also

并且

$('.divName').append();

in our code base, can someone kindly explain? I am a newbie at Jquery.

在我们的代码库中，有人可以解释一下吗？我是Jquery的新手。

4 个解决方案

#1

Although it's a css selector fundamentally here are example jQuery Selectors

虽然它基本上是一个css选择器，但这里是jQuery Selectors的例子

# is an element ID selector

＃是元素ID选择器

. is a element class selector

。是一个元素类选择器

#2

# relates to id attribute of an element, and selector returns first occurence only. . relates to class attribute, and returns all elements of the class

＃与元素的id属性相关，而selector仅返回第一次出现。。与class属性有关，并返回该类的所有元素

#3

# is used to find elements by id, whereas . is used to to elements by class name(s).

＃用于按id查找元素，而。用于按类名称的元素。

So $('#divName') means: find div with id divName and $('.divName') means find all divs with class divName

所以$（'＃divName'）表示：找到id为div div的div和$（'。divName'）表示找到所有div类divName

You can find description of range of selectors at jQuery API Selectors

您可以在jQuery API选择器中找到选择器范围的描述

#4

The hash (#) is a selector based on an id like <div id="myid"> and the dot (.) is a selector based on an class like <div class="somethingClass">

哈希（＃）是一个基于像

这样的id的选择器，而点（。）是一个基于像

这样的类的选择器

#1