21.21.尚硅谷_JS基础_赋值运算符

1、 =

可以将符号右侧的值赋值给符号左侧的变量

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>
        var a = 10 ;
        console.log(a)
    </script>
</head>
<body>
    
</body>
</html>

2、 += / -= / *= / /= / %=

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <script>
        var a = 10 ;//加法
        a+=5//a+=5 等价于a = a + 5
        console.log(a)

        var a = 10;//减法
        a -= 5
        console.log(a)

        var a = 10;//乘法
        a *= 5
        console.log(a)

        var a = 10;//除法
        a /= 5
        console.log(a)
        
        var a = 10 ;//取模，就是算余数
        a %= 3;
        console.log(a)
    </script>
</head>
<body>
    
</body>
</html>

第21节：赋值运算符

21.21.尚硅谷_JS基础_赋值运算符

1、 =

2、 += / -= / *= / /= / %=