jQuery: match currency with a regular expression

Question

In the following:

<span>This cost $15.99 per item</span>

how do I return "$15.99" using jquery? The value can also be for example "$7".

Answer 1

$("span").filter(function() { return this.text().match('\$\d+(.\d+)?'); });

You can use just the match of match('\$\d+(\.\d+)?'), but the above function will filter spans that contain the match.

Answer 2

The expression would be something similar to \$\d+(\.\d+)? or \$\d+(?:\.\d+)? to get rid of the sub group.

Answer 3

Will the text always be "This cost [your price] per item", or is the text also arbitrary?

If the text is fixed, you can just $.replace() everything except the price (in two steps) with an empty string.

Answer 4

return($('span').text().match(/\$\d.+\d/));

example

Answer 5

demo

alert($('span').text().match(/\$\d+.\d+/));

but there is a code here for the regex to be more precise...