JavaScript in HTML web pages ko dynamic aur interactive banane ke liye use hota hai. JavaScript ki help se web page par actions, animations, form validation, aur content changes easily perform kiye ja sakte hain.
The HTML <script> Tag
JavaScript in HTML ko add karne ke liye <script> tag use hota hai.
<script> tag ka use client-side script (JavaScript) define karne ke liye hota hai.
<script> element:
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Direct JavaScript code contain kar sakta hai
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Ya
srcattribute ke through external JavaScript file ko link kar sakta hai
Example:
JavaScript ka use commonly image manipulation, form validation, aur dynamic content create karne ke liye hota hai.
HTML elements ko select karne ke liye document.getElementById() method frequently use hota hai.
A Taste of JavaScript
JavaScript in HTML kya kar sakta hai, uska ek simple example:
Is example me:
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Button click hone par JavaScript function run hota hai
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Aur paragraph ka text change ho jata hai
Using External JavaScript File
JavaScript in HTML me external file bhi use ki ja sakti hai.
Example:
Yahaan script.js file me JavaScript code likha hota hai.
External file use karne se:
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Code organized rehta hai
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Multiple pages me same script reuse kiya ja sakta hai
The HTML <noscript> Tag
JavaScript in HTML me <noscript> tag ka use alternate content show karne ke liye hota hai.
Yeh content un users ko dikhaya jata hai:
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Jinhone browser me JavaScript disable kiya ho
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Ya jinka browser JavaScript support nahi karta
Example:
Agar JavaScript disable hoga to yeh message user ko show hoga.
Is tarah JavaScript in HTML web pages ko dynamic, interactive aur user-friendly banata hai, jisse developers content manipulate kar sakte hain aur users ke actions ke according different functionalities provide kar sakte hain.
