Where To Put JavaScript Code In The Web Page
In general, JavaScript can be put anywhere into the source code of a web page.
The browser runs any JavaScript it encounters while loading the web page, when it's encountered.
Therefore, JavaScript that should run early is generally put into the HEAD area of the web page source code. Otherwise (unless the nature of the JavaScript requires it to be at a certain location), the JavaScript code can be put near the bottom of the page above the cancel </BODY> tag.
For an example, let's assume the JavaScript has a timer.
If the JavaScript is put into the HEAD area of the page, the timer will start as soon as the page begins to load. If put at the bottom of the page, the timer will start when the page has nearly finished loading.
For fast loading pages, there will be little or no noticeable difference. On slow loading pages, there may be quite a bit of difference.
Put the JavaScript in the location that will work best for you.
Will Bontrager
Was this blog post helpful to you?
(anonymous form)
All information in WillMaster Blog articles is presented AS-IS.
We only suggest and recommend what we believe is of value.
As remuneration for the time and research involved to provide quality links,
we generally use affiliate links when we can.
Whenever we link to something not our own, you should assume
they are affiliate links or that we benefit in some way.
Recent Articles in the Library
File Uploader
This file uploader is complete as one PHP script. No external modules or classes are required. Optional login for private use.
Fun Jumper
This fun jumper is easy to implement. Paste the code into one of your web pages. When you are ready to define your own content, replace the image tag.
The HTML optgroup Tag
The HTML <optgroup> tag allows you to group items in a dropdown list.
Determining Div Location
I generally get the location and dimension numbers of a div with the JavaScript getBoundingClientRect() function. Then access the numbers I need from the function's return value.
Site-wide Login System
A site-wide log-in system that lets pretty much any directory be password protected.
Image Show
With the no-custimizations-required script, it is now relatively easy to show off a series of images on your web page.
A Variables Dump
This PHP function returns details about the variable that is being dumped.
