Web Front-end
CSS Tutorial
Why Doesn't My JavaScript Range Slider Work When Moved from JSFiddle to an External Page?
Why Doesn't My JavaScript Range Slider Work When Moved from JSFiddle to an External Page?
Dec 16, 2024 pm 06:21 PM
JSFiddle Code Stumbles on External Page
In an attempt to migrate functional code from JSFiddle to an external page, a user encounters unexpected behavior where the JavaScript component ceases to function.
Code Setup
The user provided the following HTML, CSS, and JavaScript code:
<body>
input[type="range"]{
-webkit-appearance: none;
-moz-apperance: none;
border-radius: 6px;
width: 225px;
height: 6px;
border: 2px solid #eceef1;
outline:none;
background-image: -webkit-gradient(
linear,
left top,
right top,
color-stop(0.15, #eceef1),
color-stop(0.15, #0c0d17)
); }
input[type='range']::-webkit-slider-thumb {
-webkit-appearance: none !important;
background-color: #1ec2c5;
border: 3px solid #000000;
height: 25px;
width: 25px;
border-radius: 20px;}$('input[type="range"]').change(function () {
var val = ($(this).val() - $(this).attr('min')) / ($(this).attr('max') - $(this).attr('min'));
$(this).css('background-image',
'-webkit-gradient(linear, left top, right top, '
+ 'color-stop(' + val + ', #eceef1), '
+ 'color-stop(' + val + ', #0c0d17)'
+ ')'
);
});Root of the Issue
Despite placing the code into the external page's HTML, JavaScript, and CSS files, the JavaScript portion failed to execute.
The key insight came from the fact that JSFiddle places the user's JavaScript code within an onload handler. Therefore, the code is executed only after the entire page is loaded. In the external page, however, the JavaScript was positioned in the
, where it executed before the input elements had been parsed.Remedy
To rectify the issue, the user can employ one of three solutions:
- Enclose the code within an onload or, preferably, document ready handler, e.g.,
$(document).ready(function() {
// your code here
});- Utilize a shortened form of document ready handler:
$(function() {
// your code here
});- Shift the placement of the script tag containing the JavaScript code to the end of the page, allowing for elements to be parsed before the code executes.
The above is the detailed content of Why Doesn't My JavaScript Range Slider Work When Moved from JSFiddle to an External Page?. For more information, please follow other related articles on the PHP Chinese website!
Hot AI Tools
Undress AI Tool
Undress images for free
Undresser.AI Undress
AI-powered app for creating realistic nude photos
AI Clothes Remover
Online AI tool for removing clothes from photos.
Clothoff.io
AI clothes remover
Video Face Swap
Swap faces in any video effortlessly with our completely free AI face swap tool!
Hot Article
Hot Tools
Notepad++7.3.1
Easy-to-use and free code editor
SublimeText3 Chinese version
Chinese version, very easy to use
Zend Studio 13.0.1
Powerful PHP integrated development environment
Dreamweaver CS6
Visual web development tools
SublimeText3 Mac version
God-level code editing software (SublimeText3)
Hot Topics
What is 'render-blocking CSS'?
Jun 24, 2025 am 12:42 AM
CSS blocks page rendering because browsers view inline and external CSS as key resources by default, especially with imported stylesheets, header large amounts of inline CSS, and unoptimized media query styles. 1. Extract critical CSS and embed it into HTML; 2. Delay loading non-critical CSS through JavaScript; 3. Use media attributes to optimize loading such as print styles; 4. Compress and merge CSS to reduce requests. It is recommended to use tools to extract key CSS, combine rel="preload" asynchronous loading, and use media delayed loading reasonably to avoid excessive splitting and complex script control.
What is Autoprefixer and how does it work?
Jul 02, 2025 am 01:15 AM
Autoprefixer is a tool that automatically adds vendor prefixes to CSS attributes based on the target browser scope. 1. It solves the problem of manually maintaining prefixes with errors; 2. Work through the PostCSS plug-in form, parse CSS, analyze attributes that need to be prefixed, and generate code according to configuration; 3. The usage steps include installing plug-ins, setting browserslist, and enabling them in the build process; 4. Notes include not manually adding prefixes, keeping configuration updates, prefixes not all attributes, and it is recommended to use them with the preprocessor.
What is the conic-gradient() function?
Jul 01, 2025 am 01:16 AM
Theconic-gradient()functioninCSScreatescirculargradientsthatrotatecolorstopsaroundacentralpoint.1.Itisidealforpiecharts,progressindicators,colorwheels,anddecorativebackgrounds.2.Itworksbydefiningcolorstopsatspecificangles,optionallystartingfromadefin
CSS tutorial for creating a sticky header or footer
Jul 02, 2025 am 01:04 AM
TocreatestickyheadersandfooterswithCSS,useposition:stickyforheaderswithtopvalueandz-index,ensuringparentcontainersdon’trestrictit.1.Forstickyheaders:setposition:sticky,top:0,z-index,andbackgroundcolor.2.Forstickyfooters,betteruseposition:fixedwithbot
What is the scope of a CSS Custom Property?
Jun 25, 2025 am 12:16 AM
The scope of CSS custom properties depends on the context of their declaration, global variables are usually defined in :root, while local variables are defined within a specific selector for componentization and isolation of styles. For example, variables defined in the .card class are only available for elements that match the class and their children. Best practices include: 1. Use: root to define global variables such as topic color; 2. Define local variables inside the component to implement encapsulation; 3. Avoid repeatedly declaring the same variable; 4. Pay attention to the coverage problems that may be caused by selector specificity. Additionally, CSS variables are case sensitive and should be defined before use to avoid errors. If the variable is undefined or the reference fails, the fallback value or default value initial will be used. Debug can be done through the browser developer
What are fr units in CSS Grid?
Jun 22, 2025 am 12:46 AM
ThefrunitinCSSGriddistributesavailablespaceproportionally.1.Itworksbydividingspacebasedonthesumoffrvalues,e.g.,1fr2frgivesone-thirdandtwo-thirds.2.Itenablesflexiblelayouts,avoidsmanualcalculations,andsupportsresponsivedesign.3.Commonusesincludeequal-
CSS tutorial focusing on mobile-first design
Jul 02, 2025 am 12:52 AM
Mobile-firstCSSdesignrequiressettingtheviewportmetatag,usingrelativeunits,stylingfromsmallscreensup,optimizingtypographyandtouchtargets.First,addtocontrolscaling.Second,use%,em,orreminsteadofpixelsforflexiblelayouts.Third,writebasestylesformobile,the
Can you nest a Flexbox container inside a CSS Grid item?
Jun 22, 2025 am 12:40 AM
Yes, you can use Flexbox in CSSGrid items. The specific approach is to first divide the page structure with Grid and set the subcontainer into a Grid cell as a Flex container to achieve more fine alignment and arrangement; for example, nest a div with display:flex style in HTML; the benefits of doing this include hierarchical layout, easier responsive design, and more friendly component development; it is necessary to note that the display attribute only affects direct child elements, avoids excessive nesting, and considers the compatibility issues of old browsers.
