【JavaScript】forやwhileで特定の条件のみ除外したい

forやwhileで特定の条件のみ除外したい場合には、

• continue

• break

の2つが使える。

continueの場合

for(let i = 0;i < 10; i++){
  if(i === 4){
    continue;
  }
  console.log(i);
}

console

0
console_runner-1df7d3399bdc1f40995a35209755dcfd8c7547da127f6469fd81e5fba982f6af.js:1 1
console_runner-1df7d3399bdc1f40995a35209755dcfd8c7547da127f6469fd81e5fba982f6af.js:1 2
console_runner-1df7d3399bdc1f40995a35209755dcfd8c7547da127f6469fd81e5fba982f6af.js:1 3
console_runner-1df7d3399bdc1f40995a35209755dcfd8c7547da127f6469fd81e5fba982f6af.js:1 5
console_runner-1df7d3399bdc1f40995a35209755dcfd8c7547da127f6469fd81e5fba982f6af.js:1 6
console_runner-1df7d3399bdc1f40995a35209755dcfd8c7547da127f6469fd81e5fba982f6af.js:1 7
console_runner-1df7d3399bdc1f40995a35209755dcfd8c7547da127f6469fd81e5fba982f6af.js:1 8
console_runner-1df7d3399bdc1f40995a35209755dcfd8c7547da127f6469fd81e5fba982f6af.js:1 9

breakの場合

for(let i = 0;i < 10; i++){
  if(i === 4){
    break;
  }
  console.log(i);
}

1
console_runner-1df7d3399bdc1f40995a35209755dcfd8c7547da127f6469fd81e5fba982f6af.js:1 2
console_runner-1df7d3399bdc1f40995a35209755dcfd8c7547da127f6469fd81e5fba982f6af.js:1 3