What is jQuery?
jQuery is “write less, do more” open source Javascript library.
Specialized for changing web page documents on the fly.
jQuery makes it easy to add action and interactivity to any web page.
jQuery makes things like HTML document traversal and manipulation, event handling, animation, and Ajax much simpler with an easy-to-use API that works across a multitude of browsers.
jQuery is the core library. jQueryUI is built on top of it. If you use jQueryUI, you must also include jQuery.
Importance of jQuery?
Open Source.
jQuery is SEO friendly and CSS3 compliant.
Browser Compatibility i.e.; Works for all browsers.
jQuery is very small, clean code that won’t bog down the loading time of web pages
Highly Documented.There’s a low learning curve. Since it’s based on plain old JavaScript, developers can learn jQuery fast.
Web page elements display even if JavaScript is disabled in the browser.
Simplifies AJAX.
It is extensible – jQuery can be extended to implement customized behavior.
History of jQuery
Developed by John Resig.
Initial Release – 2006
Current Version – 3.1.1
Main site: https://jquery.com/
Basic Structure of jQery
<script type = “text/javascript”>
//jQuery detects this state of readiness for you.
$( document ).ready() method will only run once the page Document Object Model (DOM) is ready for JavaScript code to execute.
$(document).ready(function(){
document.write(“Hello, World!”);// to print a string we will use document.write(); method
});
</script>
File Extension of jQuery
filename.js
Comment Line in jQuery
Single line comment is done using //
Multi- line comment start with /* and end with */.
Variable Declaration
In jQuery, you can declare variable in two styles.
- $.name = “value”;
2. var variable_name = “value”;
Amazon Brand - Supples Premium Baby Diaper Pants | 54 Baby Diapers | XL | 12-17 Kg | 12 Hrs Absorption | Cushiony Cotton Soft Fabric | Phthalates-Free | Triple Leak Guard
₹479.00 (as of December 26, 2025 20:44 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
GLUN® Door Bottom Sealing Guard, Gap Space Filler Pack of 3 Brown Colour, 39 Inch Length, Protection from Insects, Dust & Water, Noise Cancellation, Cooling Leakage Protection
₹159.00 (as of December 26, 2025 20:44 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
One94Store Rechargeable Silicone Panda Night Light for Kids | 7-Color LED Changing Lamp |Adorable Room Decor & Gift for Toddlers, Teens, & Valentine's Day Present|Soft BPA-Free Nightlight| Multicolour
₹389.00 (as of December 26, 2025 20:44 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
R for Rabbit Hygocare 1000ml Baby Laundry Liquid Detergent for Clothes Powered by Bio Enzyme Handwash & Machine Wash, Effective Stain Removal, Residue-Free Biodegradable
₹296.00 (as of December 26, 2025 20:44 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
DIVYAM Soft Kids Blanket Red 80x120 cm Set of 1 – Ultra Soft, Skin-Friendly, Lightweight & Warm Multi-Season Fleece Blanket for Crib, Stroller, Travel, or Naptime, Full Coverage Blanket
₹299.00 (as of December 26, 2025 20:44 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
LittleBum Lite Khaki Handsfree Baby Carrier - Comfortable Front & Back Baby Carry for 4-12 Month Old Upto 10 kg – Adjustable Straps, Breathable Fabric, Memory Foam Head Support
₹899.00 (as of December 26, 2025 20:44 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
TEDDYY Baby Easy Pant Diapers Medium 74 Count (Pack of 1), 7-12 kgs, 10 hrs Leak Protection, Anti - Bacterial
₹485.00 (as of December 26, 2025 20:44 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Cetaphil Baby Soothing Moisturising Cream - (566gm)
₹1,673.07 (as of December 26, 2025 20:44 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
R for Rabbit Little Genius Learner Polypropylene Kids Study Table & Chair Set with Storage 4-in-1 Multifunctional Desk for 3-7 Years Children, Weight Capacity Upto 40kgs (Grey Multi)
Now retrieving the price.
(as of December 26, 2025 20:44 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Rster Pack of 12 Silicone Corner Protector for Baby Edge Protector for Sharp Edges Baby Proofing Edge Guards Table Corners Edge Protector for Furniture Bed
₹297.00 (as of December 26, 2025 20:44 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
HP v236w USB 2.0 64GB Pen Drive, Metal
₹583.00 (as of December 27, 2025 03:59 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Ambrane Unbreakable 3A Fast Charging 1.5m Braided Type C Cable for Smartphones, Tablets & other Type C devices, 480Mbps Data Sync, Quick Charge 3.0 (RCT15A, Black)
₹149.00 (as of December 27, 2025 03:59 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Portronics Konnect X 60W Unbreakable Nylon Braided Cable, 2M Fast Charging Cable For iPhone 15 Series, iPad, Samsung Galaxy (Black)
₹155.00 (as of December 27, 2025 03:59 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
HP 680 Original Ink Advantage Cartridge (Black)| 3000+ Learning worksheets Worth Rs 599 Free
₹829.00 (as of December 27, 2025 03:59 GMT +05:30 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)