A function to parse a USD currency

currency_to_float.js

"use strict";

var tests = {
    "$0.41": 0.41,
    "$12,345.67": 12345.67,
    "$1m": 1000000,
    "$32b": 32000000000,
    "$0.2t": 200000000000
};


var currencyToFloat = function (inputString) {
    // clean a dollar sign and any leading+trailing spaces
    var inputString = inputString.replace(/^\s*\$\s*/g, '').replace(/^\s+|\s+$/g, '').replace(',', '');
    // trailing "m" means 1.0x10^6
    if(inputString.match(/m$/i)) {
        return parseFloat(inputString) * 1000000;
    // trailing "m" means 1.0x10^9
    } else if(inputString.match(/b$/i)) {
        return parseFloat(inputString) * 1000000000;
    // trailing "m" means 1.0x10^12
    } else if(inputString.match(/t$/i)) {
        return parseFloat(inputString) * 1000000000000;
    }
    return parseFloat(inputString);
}

for (var i in tests) {
    var this_result = currencyToFloat(i);
    if(this_result !== tests[i]) {
    console.log('failed: ', i, '; expected: ', tests[i], '; received: ', this_result);
    }
}