使用条件退出 for 循环

Question

I had a problem which was that I was using a loop eg

for(let i=0; i<10; i++){
if(i === 3){
    // go to the next iteration of the loop
}
console.log(i)

}

and I was struggling to see how to get to the next iteration. I tried a "return" statement but this came up with the error "illegal return statement" and having done a quick search on the forums the answer was not obvious, so I thought I'd log it here so that next time I can find it easier.

Answer 1

查看了 MDN 文档后，IU 真正想要的是一个“继续”语句，它使块中的其余代码短路并直接进入下一次迭代。

Answer 2

You just have to write a continue keyword in for loop to goto next loop,

for(let i=0; i<10; i++){
    if(i === 3){
        continue;
    }
    console.log(i)
}

Note: choose let judiciously, it can also be used with var as it is having a function scope.

Answer 3

If you want to skip the rest of code in current iteration and get to next one, continue; https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/continue

If you want to exit loop completely, use break;

https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Statements/for...of