2 methods and precautions for adding script scripts in html

There are two ways to add script scripts in html, directly adding javascript code to html and adding external js files. These two methods are relatively common. You can choose freely according to your own needs.Add in html <script>Script method: <br><br></strong><span style="color:#ff0000">1. You can directly add javascript code to html</span><strong> <br></strong></p> <p>code As follows: </p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>&lt;script type=&quot;text/javascript&quot;&gt; //javascritp代码 &lt;/script&gt;</pre><div class="contentsignin">Copy after login</div></div><p><br/>When the interpreter embeds <script> code, the processing of the html page will also be temporarily stopped. <br/><br/><span style="color:#ff0000">2. Add external js files</span><strong> <br/></strong></p><p>The code is as follows:</p><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class='brush:php;toolbar:false;'>&lt;script type=&quot;text/javascript&quot; src=&quot;外部.js代码的地址&quot;&gt;&lt;/script&gt;</pre><div class="contentsignin">Copy after login</div></div><p><br/><strong>Note Matters: <br/></strong>① In XHTML documents, the </script> tag can be omitted, for example:

##The code is as follows:

<script type="text/javascript" src="example.js" />

However, the tag cannot be omitted in HTML. This tag does not comply with HTML specifications, so it cannot be correctly parsed by some browsers.

② It is best to place the <script> tag before the </body> tag, so that the browser can load the page faster. <br/><br/>③When using <script> to embed JavaScript code, do not appear the "</script>" string anywhere in the code. For example, the browser will generate an error when loading the following code:

The code is as follows:

<script type="text/javascript"> 
function function1(){ 
alert("</script>"); 
}

Because according to the rules for parsing embedded code, when the browser When the string "" is encountered, it is considered to be the closing tag. If you want to add the string to your code, you can write it as <\/script>

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