Jquery 与原生 js的对比

Jquery 是使用js封装的一个库，Jquery 可以在官网下载，也可以在线引用。
作业内容：
1、下载并引用jQuery
官网下载，或在线引用

2、JavaScript 和 jQuery 对比。
js是一门编程语言，JQuery 是js 语言封装的js库，有点在于使用方便，操作dom更加轻松

3、列出 $() 的参数
$(‘.class’);
$(‘div’);
$(function(){ …});

4、列出选择器，并查看效果。

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <script src="http://libs.baidu.com/jquery/2.1.4/jquery.min.js"></script>
    <title>Document</title>
</head>
<body>
    <ul id="myUl">
        <li>
            1
            <ul class="nav">
                <li>11</li>
                <li>22</li>
                <li>33</li>
                <li>44</li>
            </ul>
        </li>
        <li>2
            <a href="">点我</a>
        </li>
        <li>3</li>
        <li>4</li>
        <li>5</li>
        <li>6</li>
    </ul>
    <script>
// document.querySelector('#myUl').style.color = 'red'; 
let myUl = document.querySelector('#myUl');// id选择器
myUl.style.color = 'red';
// $('#myUl').css('color','red');// id选择器
let navs = document.querySelector('.nav');// 类选择器
navs.style.color = 'blue';
// $('.nav').css('color','blue');// 类选择器
let tags = document.querySelector('a');// 标签选择器
tags.style.color = 'Chartreuse';
// $('a').css('color','Chartreuse');// 标签选择器
    </script>
</body>
</html>

Correcting teacher：

PHPz

Correction status：qualified

Teacher's comments：

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Jquery 与原生 js的对比

Jquery 与 原生 js的对比

Jquery 与原生 js的对比