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nitisinghnitisingh 

If i Have an three text box and one submit button and if i filled values all three ,submit button will be enabled and if two filled then it will be disabled .

GulshanRajGulshanRaj
Hi,

You can use javascript to enable/disable button by grabing button id.

Please follow W3School (https://www.w3schools.com/jsref/prop_pushbutton_disabled.asp) link

Thanks
Gulshan Raj