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in Technique[技术] by (71.8m points)

以下的代码返回跟想像的不一致,怎么解?

function has(list, item) {
  list.forEach(v => {
    if (v === item) {
        return true
    }
  })
  return false
}

console.info(has([1,2,3], 1))

怎么让结果为true???


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Welcome To Ask or Share your Answers For Others

1 Reply

0 votes
by (71.8m points)

1、forEach循环无法中断
2、用for循环
3、用indexOf
4、用ES6的includes


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