find() 方法,用于查找数组内的某个元素
let arr = ['liu', 'yuan', 'wai'];
let val = arr.find((value, index, arr) => {
console.log(index)
console.log(arr)
return value === 'liu'
})
console.log(val)
find() 方法,用于查找数组内的某个元素
let arr = ['liu', 'yuan', 'wai'];
let val = arr.find((value, index, arr) => {
console.log(index)
console.log(arr)
return value === 'liu'
})
console.log(val)