02_js两个变量交换值

JavaScript两个变量交换值:

<script type="text/javascript">
            //交换两个变量的值
            var number1 = 100;
            var number2 = 200;
            
            //方法一：定义第三个变量
            var number3 = number1;
            //再进行变量值的交换
            number1 = number2;
            number2 = number3;
            
            //方法二：运算
            number1 = number1 + number2;
            number2 = number1 - number2;
            number1 = number1 - number2;
                
</script>