Regex evaluate to true but its not supposed to

Question

I have input field which db is expecting to come as integer. if i type 60 it works fine, but 60.00 doesn't. I did RegExp for validation with the ^[0-9]+/ expession. It works fine for inputs like 60.asdass, 60.0320320, dasdasdas.60 etc. but if i type 60. and it evaluates to true and it passes the validation and i get an error from db. How can i make my regex to sets as false in this situation?

score 3 · Accepted Answer · answered Jun 08 '17 at 14:50

3

Add the end of string anchor ($):

^[0-9]+$

answered Jun 08 '17 at 14:50

Dmitry Egorov

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Thanks! Ill accept it in 10 mins. – Expressingx Jun 08 '17 at 14:52

Eddie Martinez · Answer 2 · 2017-06-08T14:56:30.913

0

You can use this. By using anchors it will fail if the full input is not the regular expression specified.

^\d+$

edited Jun 08 '17 at 14:56

answered Jun 08 '17 at 14:51

Eddie Martinez

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score 0 · Answer 3 · answered Jun 08 '17 at 14:56

You could test the rest of the array as well and use start and end of the string as well for testing.

function check() {
    var element =document.getElementById('input'),
        value = element.value;
    
    element.style.color = /^\d+(\.\d+)*$/.test(value) ? '#000000': '#ff0000';
}

<input id="input" type="text" onkeyup="check()">

Regex evaluate to true but its not supposed to

3 Answers3