need code for counting from string

Question

i want after i have been type 123A0001-123A0100 the result is 100. Or if 123A0123-123A0200 the result is 78. how do i do that?please help.

thanks before.

James · Accepted Answer · 2010-07-23 10:05:30Z

2

var str = 'A0001-A0100',
    match = str.match(/\d+/g);

if (match) {
    alert(+match[1] - +match[0]);
}

+ (unary plus) will cast the string to a number (does the same as Number(...)).

answered Jul 23, 2010 at 10:05

James

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2 Comments

how if var str= '123x0001-123x0023'?

@klox, in that case you'd want to change str.match(/\d+/g) to str.match(/\d+(?=-|$)/g).

Ralf de Kleine · Accepted Answer · 2010-07-23 10:07:54Z

0

There is a calculation plug-in for jQuery.

answered Jul 23, 2010 at 10:07

Ralf de Kleine

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