How to mask input of textbox with some prefix?

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I am trying to mask the input of the mobile number so i am doing something like this

HTML

("#mobNum").mask("(+91) 999-999-9999)

this mask is equivalent to this input
prefix +91 then followed by 3 digits followed by another 3 digits and then 4 digits.
so it is something like this +91 987-569-4869
So i want to prefix (+91) in the front of the text box automatically
how can i achieve this

Posted 31-Jul-15 0:28am

lokopi.nagar

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himanshu agarwal · Answer 1 · 2015-07-31T01:31:00

Solution 1

You can add a keyup handler to add the prefix.

JavaScript

$("#mobNum").keyup(function(){
    var prefix = "+91"

    if(this.value.indexOf(prefix) !== 0 ){
        this.value = prefix + this.value;
    }
});

Posted 31-Jul-15 1:31am

himanshu agarwal