Convert Currency String to FloatValue

Steps:

• remove the points: .split('.').join('')
• change comma to point: .split(',').join('.')
• convert to float: Number('string');

To do in a row would only be:

Number("10.000,50".split('.').join('').split(',').join('.'));

In function:

function toFloat(str) {
    if (typeof str == 'number') return str;
    return Number(str.split('.').join('').split(',').join('.'));
}

var testes = ['10.000,50', '105,45', '1.000.005,70'];
console.log(JSON.stringify(testes.map(toFloat))); // [10000.5,105.45,1000005.7]

jsFiddle: link