Calculate color HEX having 2 colors and percent/position

Question

Is it possible to calculate a color in a middle of a gradient?

var color1 = \'FF0000\';
var color2 = \'00FF00\';

// 50% between the two colors, should retur         


        

Answer 1

I can't comment on the answer above, so I write it here:

I found out that in the Javascript substring method the to parameter index is not included in the returned string. That means:

var string = "test";
//index:      0123
alert(string.substring(1,3));

//will alert es and NOT est

Edit: So it should be:

parseInt(color1.substring(0,2), 16);
parseInt(color1.substring(2,4), 16);

and

parseInt(color1.substring(4,6), 16);