Convert Fraction String to Decimal?

Here is the bare bones minimal code needed to do this:

var a = "3/2";
var split = a.split('/');
var result = parseInt(split[0], 10) / parseInt(split[1], 10);
alert(result); // alerts 1.5

JsFiddle: http://jsfiddle.net/XS4VE/

Things to consider:

• division by zero
• if the user gives you an integer instead of a fraction, or any other invalid input
• rounding issues (like 1/3 for example)

Something like this:

bits = fraction.split("/");
return parseInt(bits[0],10)/parseInt(bits[1],10);

Since no one has mentioned it yet there is a quick and dirty solution:

var decimal = eval(fraction); 

Which has the perks of correctly evaluating all sorts of mathematical strings.

eval("3/2")    // 1.5
eval("6")      // 6
eval("6.5/.5") // 13, works with decimals (floats)
eval("12 + 3") // 15, you can add subtract and multiply too

People here will be quick to mention the dangers of using a raw eval but I submit this as the lazy mans answer.