When working with JavaScript, I have encountered a challenge where I need to validate an input that can only accept either 11 numeric characters or 17 alphabetic characters.
Individually, I am able to check for one of these conditions but struggling to implement both simultaneously. I am unsure of how to proceed in solving this issue.
Does anyone have any suggestions on how I can overcome this obstacle?
-retrieve the input value:-
For example:- If you are using Id:- document.getElementById('textbox_id').value to obtain the value of the desired box
You can utilize regex :-
to validate 10 digits
var str='01234567891';
console.log(/^\d{11}$/.test(str));
to match 17 alphanumeric Characters
var reg= new RegExp('[a-zA-Z0-9]{17}');
console.log(reg.test("1234567890qwertyu"))
You can combine both to verify if the desired condition is met
var str = document.getElementById('textbox_id').value
var reg= new RegExp('[a-zA-Z0-9]{17}');
if(reg.test(str) || /^\d{11}$/.test(str)){
}
else{
}
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