Code written in JavaScript must be executed from a document written in HTML.
There are three ways of doing this :
1. you can place the JavaScript between <script> tags within the <head> of the document :
2. a much better technique is to place your JavaScript code into a separate file. 
 
3. the best way is to place the <script> tag at the end of the document right before the closing 
</body> tag :
 
 
Placing the <script> tag at the end of the document lets the browser load the page faster. 
Programming languages are either interpreted or compiled. Languages like Java or C++ require a
compiler. A compiler is a program that translates the source code written in a high-level language like Java into a file that can be executed directly by a computer.
 
Interpreted languages dont require a complier -- they just need an interpreter instead.
With JavaScript, in the context of the World Wide Web, the web browser does the interpreting.

Without the interpreter, the JavaScript code would never be executed.

 
If there are any errors in the code written in a compiled language, those errors will pop up when the code is compiled. In the case of an interpreted language, errors won’t become apparent until the interpreter executes the code
 
 
 

3 ways of including JavaScript in HTML的更多相关文章

  1. JavaScript Libraries In A TypeScript Application, Revisited

    If you haven’t already gotten involved with it, you’ll probably know that TypeScript is becoming inc ...

  2. Code optimization and organization in Javascript / jQuery

    This article is a combined effort of Innofied Javascript developers Puja Deora and Subhajit Ghosh) W ...

  3. springcloud starter(一)

    Spring Cloud - Getting Started Example, 转载自:https://www.logicbig.com/tutorials/spring-framework/spri ...

  4. 翻译：打造Edge渲染内核的浏览器

    最近开始了解UWP和Edge内核,在微软技术博客中找到一篇文章,主要是介绍Edge渲染内核使用技术.顺手翻译了一下.不对之处请斧正! Over the past several months, we ...

  5. 轻松解决Linux安装Eclipse方法

    随着Linux的发展,很多人开始学习Linux系统,你了解Linux系统么?你是Linux系统的应用者么?本文为你详细介绍Linux安装Eclipse,为你在学习Linux安装Eclipse时起一定的 ...

  6. 30+学习Web设计和开发的优质新鲜资源

    今天我们整理了一些最新的Web设计和开发的资源,这些资源都来自国外的流行站点,不过大家应该不会陌生,放在这里供大家收藏,在需要的时候方便翻阅和学习! 原文地址:http://www.goodfav.c ...

  7. JS外链

    <script type=”text/javascript” src=”example.js”></script>   外链的javascript都有一个.js的后缀,但是这并 ...

  8. The Chain Of Responsibility (1)

    今天分享一下,设计模式中的责任链模式,其余的不过多叙述. 思路 在正式接触责任连之前,我们可以想象到的应该是一个链,链表?要处理一件事需要一个链似得?其实答案差不多就是这样.设计模式也都是从朴素的思维 ...

  9. 20+ Docs and Guides for Front-end Developers (No. 5)

    It’s that time again to choose the tool or technology that we want to brush up on. If you feel like ...

随机推荐

  1. JAXB介绍一

    参考博客: https://www.cnblogs.com/chenbenbuyi/p/8283657.html https://www.cnblogs.com/cnsdhzzl/p/8390514. ...

  2. Mybatis介绍(一)

    这里介绍的mybatis比较简单, 我做为一个初学者, 记录下个人在学习中方法, 如果那里出错, 希望读者朋友们见谅. 首先这里介绍一下我们下面用的表结构: author表是保存了作者的个人信息, 因 ...

  3. C# sftp通过秘钥上传下载

    一.适用场景 我们平时习惯了使用ftp来上传下载文件,尤其是很多Linux环境下,我们一般都会通过第三方的SSH工具连接到Linux,但是当我们需要传输文件到Linux服务器当中,很多人习惯用ftp来 ...

  4. SQL Server DBA SQL

    . 监控事例的等待 ,,)) "Prev", ,,)) "Curr",count(*) "Tot" from v$session_Wait ...

  5. hiho一下 第三十七周 二分查找之k小数

    题目链接:http://hihocoder.com/contest/hiho37/problem/1 , 简单二分. 算法: 题目即为求一个无序数组数组中第k小的数,由于数据量太大,排序是会超时的. ...

  6. libav(ffmpeg)简明教程（1）

    突然发现又有好久没有写技术blog了,主要原因是最近时间都用来研究libav去了(因为api极类似ffmpeg,虽然出自同一份代码的另外一个分支,因项目选用libav,故下文均用libav代替),其实 ...

  7. json字符串转换成对象需要注意的问题

    json转换成对象的时候应该尽量避免出现特殊的符号,如“\”这样的字符在转义成数组的时候会被去除掉,最好的例子就是后台返回的内容为存储路径的JSON,这时候最好是把一个斜杠变为两个斜杠,如: [{&q ...

  8. Android（java）学习笔记154：采用HttpClient提交数据（qq登录案例）

    1.Apache -Httpclient HttpClient 是 Apache Jakarta Common 下的子项目,可以用来提供高效的.最新的.功能丰富的支持 HTTP 协议的客户端编程工具包 ...

  9. 【转】CentOS 7.0 安装Redis 3.2.1详细过程和使用常见问题

    http://www.linuxidc.com/Linux/2016-09/135071.htm 环境:CentOS 7.0 Redis 3.2.1 Redis的安装与启动 这里我把Redis放在/h ...

  10. sublime package control以及常用插件

    一.package Control安装 1.sublime 3 import urllib.request,os; pf = 'Package Control.sublime-package'; ip ...