仅接受数字和小数

Question

Hello im creating a directive in angularjs that only accepts positive numbers and decimal, and other charecters that arent numbers (ex: +, -, abc...) will me removed.

First i tried using:

var transformedInput = text.replace(/[^0-9]/g, '');

And it works but doesnt accept decimal numbers, so i use:

transformedInput = text.replace(/[^0-9]+([,.][0-9]+)?$/g, '');

What im doing wrong in my code? can someone check it please.

Answer 1

Can you simply remove non numbers, non decimal point, non newlines, and non comma? If so you can use a super simple regex:

[^0-9.,\n]+  //global, multiline, replace with blank string

demo

Answer 2

/^[0-9]*$/

^ : Start on the begin.

[0-9]* : All number.

$ : Finish at the end.