How to get the last item in a javascript-value object with a for loop?

Question

var obj = { \'a\' : \'apple\', \'b\' : \'banana\', \'c\' : \'carrot\' }

If I do a

for(key in obj) {
  console.log( key + \' has a value         


        

Answer 1

You could loop through all of them and save the last one in a variable.

var lastItem = null;
for(key in obj) {
  console.log( key + ' has a value ' + obj[key] );
  lastItem = key;
}
// now the last iteration's key is in lastItem
console.log('the last key ' + lastItem + ' has a value ' + obj[lastItem]);

Also, because of how JavaScript works the key is also in your loop's key variable, so the extra variable is not even needed.

for(key in obj) {
  console.log( key + ' has a value ' + obj[key] );
}
// now the last iteration's key is in key
console.log('the last key ' + key + ' has a value ' + obj[key]);