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Gavin van Hoeijen
2,938 PointsWhy won't: var score += bonusPts; not work?
I was expermenting with something that seem to make more sense in my mind.
var message = "Hello!"; console.log(message); message = "Hello from JavaScript Basics"; console.log(message);
var score = 0; score += 10; score += 5;
var bonusPts = 100; var score += bonusPts;
console.log(score);
But this does not create 115. Why is this the case?
2 Answers
Josh Thackeray
9,895 PointsIt looks like you're trying to redeclare the score variable using the var keyword. By redeclaring the variable score you are effectively removing any value you have previously set, hence why += won't work.
As you've already declared this variable with a value you shouldn't need to redeclare it, just having the following should be enough.
var message = "Hello!"; console.log(message); message = "Hello from JavaScript Basics"; console.log(message);
var score = 0; score += 10; score += 5;
var bonusPts = 100;
score += bonusPts;
console.log(score);
Hope that helps.
Gavin van Hoeijen
2,938 PointsHey thanks I get it now! :D