<script>
console.log("======第一种======");
// 1、借助第三方变量
{
let a = 'Hello';
let b = 'Hi';
let temp;
temp = a;
a = b;
b = temp;
console.log("a=" + a);
console.log("b=" + b);
}
console.log("======第二种======");
// 2、通过计算方式:先加后减(只能做简单的数值类型的交换)
{
let a = 123;
let b = 456;
a = a + b;
b = a - b;
a = a - b;
console.log("a=" + a);
console.log("b=" + b);
}
console.log("======第三种======")
// 3、通过计算方式:先减后加(只能做简单的数值类型的交换)
{
let a = 123;
let b = 456;
a = a - b;
b = a + b;
a = b - a;
console.log("a=" + a);
console.log("b=" + b);
}
console.log("======第四种======")
// 4、ES6中变量的解构赋值
{
let a = 'Hello';
let b = 'Hi';
[a, b] = [b, a];
console.log("a=" + a);
console.log("b=" + b);
}
console.log("======第五种======")
// 5、数组方法
{
let a = '文明';
let b = '富强';
let c=[a,b];
b=c[0];
a=c[1];
console.log("a=" + a);
console.log("b=" + b);
}
console.log("======第六种======")
// 6、对象方法
{
let a = '文明';
let b = '富强';
let c={x:a,y:b};
b=c.x;
a=c.y;
console.log("a=" + a);
console.log("b=" + b);
}
console.log("======第七种======")
// 7、位运算(只能做简单的数值类型的交换)
{
let a = 123;
let b = 456;
a ^= b;
b ^= a;
a ^= b;
console.log("a=" + a);
console.log("b=" + b);
}
</script>
JavaScript交换两个变量的值
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转载自blog.csdn.net/sleepwalker_1992/article/details/82803057
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