JavaScript Regex to figure out the value in inches when the input value is in feet-inch notation( Eg: height) . Properly catches 5'10", 11'10", 5'2", 5'07, 5', 5'", 5 Also fails correctly for 5'13", 5'233", 521'1",

height_regex.js

height_val = $("#id_height").val();
var regex_op =  /^(\d{1,2})[\']?((\d)|([0-1][0-2]))?[\"]?$/g.exec(height_val); 
//very rare chance for someone to be of two digit feet height.
//but i put it there, just in case.
var feet = regex_op[1];
var inches = regex_op[2];
// converting to inches 
var height = (parseInt(feet) || 0) * 12 + (parseInt(inches) || 0);