JavaScript within External Script Tags: A Source Dilemma When utilizing external script tags with the syntax, it's important to understand their limitations. Attempting to embed JavaScript directly within these tags, as in the example below, results in unexpected behavior:</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre><code class="html"><script src="myFile.js"> alert("This is a test"); Copy after login This code does not work because external script tags are designed to load JavaScript code from a specified source. They do not allow for inline execution of JavaScript. To resolve this, we need to create additional tags for any JavaScript code we wish to execute on the page itself:</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre><code class="html"><script> alert("This is a test"); Copy after login The following example illustrates a common scenario where we might encounter this challenge: addScript("script/obj.js"); addScript("script/home/login.js"); Copy after login Here, we attempt to add multiple scripts to the DOM using the addScript function from an external file, but this approach fails. To execute the addScript function and dynamically load scripts, we must create an inline tag:</p> <div class="code" style="position:relative; padding:0px; margin:0px;"><pre><code class="html"><script> addScript("script/obj.js"); addScript("script/home/login.js"); Copy after login The reason for this behavior lies in the fact that external script tags load one script at a time. Attempts to include both inline and external scripts in the same tag result in the inline script being ignored. To execute multiple scripts on a page, it is necessary to create separate <script> tags for each script.</p> <p>It is worth noting that although the content of inline <script> tags is ignored when used in conjunction with external scripts, you can store data in these tags using attributes like data-*. This approach can be advantageous for certain scenarios, but using data-* attributes is generally considered a cleaner solution.</p>
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
