validation through HTML or Javascript or PHP ?

Question

for validation through Javascript or PHP we have to required long line of code. why we not frequently use validation in HTML by only writing required? ex. In HTML

saurabh mittal · Answer

Hi we usually don't use required because Required is a HTML 5 attribute.and html 5 is supported in new version of browser only.it will not work in older version of browser. and when we are making a website or application than we have to remember all the things and check that our application is working in each browser with older and newer version.mostly in Internet Explorer thanks

Sanjay Singh · Answer

thanks to all of you..

Gopi Chand · Answer

For validation through PHP follow the bellow link. http://www.c-sharpcorner.com/UploadFile/9a9e6f/form-validation-through-php/

Gopi Chand · Answer

Just try this link for validation through JavaScript http://www.c-sharpcorner.com/UploadFile/9a9e6f/validation-in-javascript/