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<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
<script src="jquery-3.4.1.js"></script>
<script>
console.log($);
/*
ƒ ( selector, context ) {
// The jQuery object is actually just the init constructor 'enhanced'
// Need init if jQuery is called (just allow error to be thrown if not included)
return new jQuery…
*/
console.log(jQuery);
/*
ƒ ( selector, context ) {
// The jQuery object is actually just the init constructor 'enhanced'
// Need init if jQuery is called (just allow error to be thrown if not included)
return new jQuery…
*/
console.log($ === jQuery); // true
// 这两种书写方式都是一个意思
// 使用 $ 符号的原因： 书写简洁，相当于其他字符与众不同，容易被记住。
// $(document).ready(function () {
// })
// jQuery(document).ready(function () {
// })
</script>
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