In this intriguing conundrum, we delve into the mystery of JSFiddle code that functions flawlessly within the confines of its creator, but falters when transplanted into one's own web page. Let us unveil the secrets that lie behind this curious behavior.
The provided sample code showcases a user interface with an input range element and supporting CSS and JavaScript code. While the CSS renders as expected, the JavaScript remains dormant, leaving the desired functionality unfulfilled.
The key to understanding this enigma lies in the placement of the code within the HTML structure. In JSFiddle, the JavaScript is executed within an "onload" handler, ensuring that it runs after the entire page has loaded. However, in your own web page, the code is placed in the
, which executes before the input elements are parsed.To rectify this irregularity, we must organize the JavaScript execution to occur after the relevant elements have been rendered. One approach is to wrap the code in an onload handler, as exemplified in JSFiddle:
<br>onload = function() {</p>
<div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">// your code here});
Alternatively, jQuery provides a more concise option in the form of the document ready handler:
<br>$(document).ready(function() {</p>
<div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">// your code here});
Or even its more convenient shorthand:
<br>$(function() {</p>
<div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><div class="code" style="position:relative; padding:0px; margin:0px;"><pre class="brush:php;toolbar:false">// your code here});
Finally, an equally effective solution is to relocate the script to the end of the HTML document, ensuring that it executes only after the elements it operates on have been parsed. This ensures that the JavaScript has access to the necessary DOM objects, allowing it to perform its intended transformations.
In essence, the discrepancy between JSFiddle and your own web page arises from the timing of JavaScript execution. By adjusting the code placement or utilizing the provided alternatives, you can orchestrate the sequence of events to achieve the desired functionality.
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