1.變量值進(jìn)行交換

        let a=10,b=20;         console.log(a,b);         [a,b]=[b,a];         console.log(a,b);

2.數(shù)組解構(gòu)

 // 等號左邊是右邊的模板,必須一樣         let [a,b,c] =[1,2,3];         console.log(a,b,c);

可預(yù)設(shè)默認(rèn)值

        [a,b,c='JS'] =[1,2];         console.log(a,b,c);

可使用歸并參數(shù)

        [a,b,...c] =[1,2,3,5,6,66];         console.log(a,b,...c);

可省略部分參數(shù)

        [,,c] =[1,2,3,5,6,66];         console.log(c);

3.對象解構(gòu)

          ({id,name}={id:10,name:"手機(jī)"});            console.log(id,name);

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