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html: fix typo (#296) 

Fixing a small typo
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Parth Parmar 2021-05-02 00:48:44 -03:00 committed by GitHub
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contents/en/html-questions.md
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@ -150,7 +150,7 @@ Putting `<link>`s in the `<head>` is part of proper specification in building an
`<script>` tags block HTML parsing while they are being downloaded and executed which can slow down your page. Placing the scripts at the bottom will allow the HTML to be parsed and displayed to the user first.
An exception for positioning of `<script>`s at the bottom is when your script contains `document.write()`, but these days it's not a good practice to use `document.write()`. Also, placing `<script>`s at the bottom means that the browser cannot start downloading the scripts until the entire document is parsed. This ensures your code that needs to manipulate DOM elements will not throw and error and halt the entire script. If you need to put `<script>` in the `<head>`, use the `defer` attribute, which will achieve the same effect of downloading and running the script only after the HTML is parsed.
An exception for positioning of `<script>`s at the bottom is when your script contains `document.write()`, but these days it's not a good practice to use `document.write()`. Also, placing `<script>`s at the bottom means that the browser cannot start downloading the scripts until the entire document is parsed. This ensures your code that needs to manipulate DOM elements will not throw an error and halt the entire script. If you need to put `<script>` in the `<head>`, use the `defer` attribute, which will achieve the same effect of downloading and running the script only after the HTML is parsed.
Keep in mind that putting scripts just before the closing `</body>` tag will create the illusion that the page loads faster on an empty cache (since the scripts won't block downloading the rest of the document). However, if you have some code you want to run during page load, it will only start executing after the entire page has loaded. If you put those scripts in the `<head>` tag, they would start executing before - so on a primed cache the page would actually appear to load faster.