HTML manipulation - we want to manipulate HTML with our JS, but the HTML must be rendered to the screen before JS can do anything.Our users perceive that the website loads faster if it gets rendered before the JS starts downloading Performance - JS is a blocking resource, which means it forces the browser to wait for it to finish downloading before the browser can continue rendering.We always put our JS files at the bottom of our HTML for 2 reasons: Using the script tag we can point to our JavaScript file. When connecting the JavaScript, it’s almost always a good idea to add the JavaScript to the bottom of your HTML file-immediately above the closing tag. Usually they’re stored inside a “js” folder in your website. The syntax is very similar to other popular languages including PHP, Perl and Java-they all sharing similar structure of parenthesis, brackets, and semi-colons.Ī JavaScript file is no different than any other web code files-just a plain old text file.
JavaScript is a general purpose programming language originally created for use inside web browsers, but now works just as well on servers.
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