Javascript ES6 - JeongtaekLim/TIL GitHub Wiki

Contents

  • list.includes()
  • for each
  • list.push()
  • list.map(..)

list.includes()

  • code
const mfunc = () => {
  	const mlist=['1','b','c3',4];
  	console.log(mlist.includes('1'));
};
  • output
true

for each

  • code
const mfunc = () => {
  	const mlist=['1','b','c3',4];
  	console.log(mlist.includes('1'));
};
  • output
1
2
3
4
5

list.push()

  • code
const mfunc = () => {
  const mlist = ["1","2asdf","3asdf","fff4","c5"]
  mlist.push("Oh!");
  console.log(mlist);
};
  • output
["1","2asdf","3asdf","fff4","c5","1"]

list.map(...)

  • example
render() {
    return (
      <div className={s.root}>
        <div className={s.container}>
          <h2>문제목록!</h2>
          <ul>
            {this.state.problemList.map(function(listValue) {
              return <li>{listValue.title}</li>;
            })}
          </ul>
        </div>
      </div>
    );
  }
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