JavaScript中的'#'符号是什么意思? [英] What does the '#' sign mean in JavaScript?
问题描述
我是Javascript的新手,我试着理解一些代码。我不明白,我找不到任何关于#
的文件。
I'm new to Javascript and I'm try to understand some code. I don't understand and I can't find any documentation about the #
sign.
$(function () {
$("#searchTerm").autocomplete({
$(#searchTerm)是什么意思?
What does $("#searchTerm") mean?
推荐答案
在JavaScript中?没什么特别的。它只是字符串的一部分。
In JavaScript? Nothing special. It is just part of a string.
$
函数可能会对它做一些事情,但很难说 $
函数是什么。
The $
function might do something with it, but it is hard to tell what the $
function is.
有很多库提供 $
函数,它充当该库的厨房接收器。它们包括< a href =http://www.prototypejs.org/ =noreferrer>原型, Mootools 和 jQuery 。这个看起来最像jQuery,在这种情况下,参数是一个包含 CSS选择器,所以#
表示<的开始a href =http://api.jquery.com/id-selector/ =noreferrer> id选择器。
There are a lot of libraries which provide a $
function that acts as a kitchen sink for that library. They include Prototype, Mootools and jQuery. This one looks most like jQuery, in which case the argument is a string containing a CSS selector, so the #
indicates the start of an id selector.
此选择具有给定id属性的单个元素。
This "Selects a single element with the given id attribute".
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