CODEWITHSUNDEEP
javascriptjqueryregex
Var
Var

Reputation: 270

regular expression for validating fields

Validations i'm trying :

Edit :

var regex = '(?!0)\d+(?:\.\d+)?$';

function getValue()  {
    // passing value 0009.99 and 0009.00 and 100
    return document.getElementById("myinput").value;

}

function test() {
    alert(regex.test(getValue()));
}

function match() {
    alert(getValue().match(regex));    
}

Upvotes: 1

Views: 98

Answers (1)

Poul Bak
Poul Bak

Reputation: 10929

Your first and second seems to Work just fine, the third can be achieved with the following regex:

/(?!0)\d+\.\d+$/

It starts by looking forward for zeros (skipping them), then it matches any number of digits followed by a dot and more digits. If you want the digits to be optional you can replace the plus '+' with a star '*'.

Edit:

If you want to allow integers, you can use this regex:

/(?!0)\d+(?:\.\d+)?$/

That makes the dot and the digits after that optional.

BTW: Your jsfiddle does not help in answering.

Edit2:

To create a Regex using quotes you must use the following syntax:

var regex = new RegExp('(?!0)\d+(?:\.\d+)?$');

Edit3:

I forgot to mention, you need to double escape backslashes, it should be:

var regex = new RegExp('(?!0)\\d+(?:\\.\\d+)?$');

Now it should Work directly in your code.

Upvotes: 4

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