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I have a test.php file and this file contains some PHP code, HTML elements and some internal JavaScript and some external JavaScript include.
I want to know which is first to load or execute.
PHP or HTML or JavaScript? I want to know execution order.
Your answers are greatly appreciated and very helpful to me and others also.
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JavaScript is synchronous. This means that it will execute your code block by order after hoisting. Before the code executes, var and function declarations are “hoisted” to the top of their scope.
Script tags are executed in the order they appear It also means scripts which appear later on the page can depend on things scripts which appear earlier have done. Elements on the page won't render until all the script tags preceding them have loaded and executed.
In order to assess the consequences of any such decision, it helps to understand how browsers work: When the browser processes an HTML document, it does so from top to bottom. Upon encountering a <script> tag, it halts (“blocks”) further processing[2] in order to download the referenced script file.
Pragmatically speaking, this is the typical order:
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PHP will execute first, then HTML and finally javascript.
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