Convert percent into a decimal in html/ javascript

Question

Javascript:

   var validate(s) = s.match ^( 100(?:\.0{1,2})? | 0*?\.\d{1,2} | \d{1,2}(?:\.\d     {1,2})? )% $ != null; 

   var str = value.match(/\/\/%//g);

    if(converted==NaN){
            alert('Input was not a number');
    }
    else if(converted != null) {

            var fracToDecimal = eval (value);

            alert(fracToDecimal);
    }
    else if(converted = str) {

            var percToDecimal = value/100;

            alert(percToDecimal);
    } }

Answer 1

So you have a string like: 50%? How about:

var percent = "50%";
var result = parseFloat(percent) / 100.0;