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Ivxn
Asked: 2020-07-06 12:01:51 +0800 CST 2020-07-06 12:01:51 +0800 CST

regular expression for length of textbox

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How can I make a regular expression to validate that in the textbox I enter a maximum of 19 digits and a minimum of 15?

what I have is this ER but I think it's wrong

var expreg = /^([0-9])*{0,25}$/;
javascript

1 Answers

  1. Best Answer

    Your Expression is wrong in the *.

    So your expression should look like this:

    var expreg = "^([0-9]){15,19}$";

    Which does *taking no value to infinity, so if you want a minimum and a maximum you specify it in{min,max}

    I leave you this regexpal website for validation of regular expressions and this other more complete regex101 website that @DanielFaro commented on.

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