programming-examples/js/Array/Write a JavaScript program which accept a string as input and swap the case of each character. For example if you input 'The Quick Brown Fox' the output should be 'tHE qUICK bROWN fOX'..js

str = 'c';  
var UPPER = 'ABCDEFGHIJKLMNOPQRSTUVWXYZ';  
var LOWER = 'abcdefghijklmnopqrstuvwxyz';  
var result = [];  
    
  for(var x=0; x<str.length; x++)  
  {  
    if(UPPER.indexOf(str[x]) !== -1)  
    {  
      result.push(str[x].toLowerCase());  
    }  
    else if(LOWER.indexOf(str[x]) !== -1)  
    {  
      result.push(str[x].toUpperCase());  
    }  
    else   
    {  
      result.push(str[x]);  
    }  
  }  
console.log(result.join(''));