js each loop key index code example
Example: jquery each
//Array
$.each( arr, function( index, value ){
sum += value;
});
//Object
$.each( obj, function( key, value ) {
sum += value;
});
//Array
$.each( arr, function( index, value ){
sum += value;
});
//Object
$.each( obj, function( key, value ) {
sum += value;
});