What Is JavaScript । Introduction To JavaScript

What Is JavaScript ।  Introduction To JavaScript

What Is JavaScript ।  Introduction To JavaScript 

JavaScript:- JavaScript ek client side programming language ha jo webpages ma programming logic add karna ka liee use ki jatee hai.Ise app is tarha samaj sakte hai,HTML ek designing language ha aur  yaa sirf webpages ko designing kartee hai.HTML ke dvraa aap webpges mein koee logic perfrom nahin kar sakate hai.

Jaise kee jab user link par click kare to aap koee function call karake kuchh processing perform karvaana chaahate ha lekin aisa aap HTML ka dvaraa nahin kar sakte hai,kyun ki HTML sirf webpages designing ka lie use ki jaati hai.

Iska liee aapko ek programming language kee jaroorat hoti ha.Javascript ek aisee hee programming language hai jo webpages mein logic add karatee hai aur unhen dynamic banaate hai.

JavaScript ko SUN MICRO SYSTEM ne develop kiya tha.Pahle iska naam LIVESCRIPT rakha gaya tha jise bad ma change karke javascript kiya gya tha.Javascript mein object oriented programming capabilites hotee hai.Ise HTML ke head section ma define kiya jaata hai.

Agar aap javascript use na kare to HTML se app koee bhee calculations perform nahi kar saktee hai.
JavaScript ek ase programming language hai jise browsers samjhate hai aur particularly webpages ke lie hee use kee jaate hai.

Also Read:-WHAT IS HTML

Features Of JavaScript

JavaScript ka 2 Important Features Hotaa ha 

Dynamic:-JavaScript dynamic webpages generate kar ma saksham hai Javascript webpages ke load hote samay hee usme changes karna mein capable hai.Webpages ke load hote samy hee decide kiya jaa sakta hai kee kya task perform karna hai.

Jab kee HTML ma aisa nhi hota hai usme sabhee action pahale se hee define hota hai aur webpages ke load time mein aap koee action nahi le sakate hai.HTML static pages generate karatee hai lekin JavaScript dynamic pages generate karatee hain.

For Example,JavaScript page load hote samay aapkee location ke hisab se weather show kar sakata hai.

Client Side:-JavaScript ek client side scripting language hai.PHP mein koee bhee execution server par perform hai lekin JavaScript ke sath asa nahi hai jab aap JavaScript ko use karte hai to koee bhee execution client side par perform hota hai.

For Example,JavaScript mein validation client side par web browser mein hee perform kiya jaata hai lekin PHP meain validation server par  prefoem hota hai,is waja se JavaScript server ka load kam kar detee hai.