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JavaScript Short Circuit Evaluation

Yifang kuo
seal-mask
.a{fill-rule:evenodd;}techdegree
Yifang kuo
Front End Web Development Techdegree Student 12,376 Points
Posted by Yifang kuo
.a{fill-rule:evenodd;}techdegree
Yifang kuo
Front End Web Development Techdegree Student 12,376 Points

I tried what Video said, but it doesn't work.

Can anyone tell me where I type wrong? Coz it keep showing error in console and I set parameter "start = 1" seems not working.

function countToFive(start=1) {
  for(var i = start; i <= 5; i+=1) {
    console.log(i);
  }
}

countToFive(0);
Yifang kuo
seal-mask
.a{fill-rule:evenodd;}techdegree
Yifang kuo
Front End Web Development Techdegree Student 12,376 Points
Yifang kuo
.a{fill-rule:evenodd;}techdegree
Yifang kuo
Front End Web Development Techdegree Student 12,376 Points

It works for me again after I tried another day. I guess is my browser have some cookies and made it not working. Thanks for helping.

1 Answer

Steven Parker
Steven Parker
231,007 Points
Steven Parker
Steven Parker
231,007 Points

Default parameters are only available in browsers supporting ES6.

In case your browser does not, you can replace the top line with these two:

function countToFive(start) {
  if (start === undefined) start = 1