js的

let testArr = [1,2,3,4,5,6] let a1 = 0 let a2=0 let b1=0 let b2 = 0 // ++在...查看全文

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js的

let testArr = [1,2,3,4,5,6] let a1 = 0 let a2=0 let b1=0 let b2 = 0 // ++在后 console.log(testArr[a1++]) console.log("此时的a1",a1) //++在前 console.log(test

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