CODEWITHSUNDEEP
javascriptregexinternet-explorer
rac
rac

Reputation: 303

Issue with Regular expression in IE

I have a problem in all versions of Internet Explorer with regular expressions. I get the error ”invalid syntax for regular expression”. It works fine in all other browsers including Microsoft Edge. While debugging in IE I noticed that it strips out ”/” in the beginning from the regex. Why does it do that?

var pattern = /^\d{10}$/;

function isPattern(input, pattern) {
    if (typeof pattern === "string") {
        pattern = "^" + pattern + "$";
    }
    var rePattern = new RegExp( pattern, "i" );
    return (typeof input === "string" && rePattern.test( input ));
}

I suspect that the error is because in Explorer it removes the first "/" from regex.

Upvotes: 0

Views: 5658

Answers (1)

dinesh
dinesh

Reputation: 342

Please remove "i" from var rePattern = new RegExp( pattern, "i" );

Actually, You should either pass a string to the constructor for regexen, or use the regex literal syntax, but not both.

var pattern = /^\d{10}$/i

or

var pattern = new RegExp("^\d{10}$","i")

Refer here - https://stackoverflow.com/questions/16721057/ie8-is-not-recognizing-my-regular-expression

Upvotes: 2

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