how to convert a multy digit array into a whole number

var wholeNumber = 0;<br /> var array = [ 5, 6, 2 ];<br /> for(var dummyVariable = 0; dummyVariable < array.length-1; dummyVariable++){<br /> array[dummyVariable] = power(10, array.length-dummyVariable-1) * array[dummyVariable];<br /> // number, exponent<br /> wholeNumber+=array[dummyVariable];<br /> }<br /> //Written And Tested In Pre-ES6 Javascript.