Question

There is a nested function (a function inside a function) that looks something like this along with some tests that I added:

function addImage( ....., borderColor){
   var height;
   var width;
   var imageObj = new Image();
   alert(' just before inner function is: ' + borderColor); 
   imageObj.onload = function(){
      alert(' just after inner function is: ' + borderColor);   

The first alert shows the correct color, but the second alert is ‘null’.

How can I get the variable borderColor inside of the nested function?

Answer 1

test case here it works fine for me

• Are you sure the second alert is the alert(' just after inner function is: ' + borderColor); part ?
• Are you sure the variable borderColor is not used elsewhere ?
• what browser are you testing on ?