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2023-12-01

CoffeeScript支持以下赋值运算符 -

Sr.No	运算符和描述	例
1	= (Simple Assignment ) 将值从右侧操作数分配给左侧操作数	C = A + B将A + B的值分配给C
2	+= (Add and Assignment) 它将右操作数添加到左操作数并将结果赋给左操作数。	C + = A等于C = C + A.
3	-= (Subtract and Assignment) 它从左操作数中减去右操作数，并将结果赋给左操作数。	C - = A相当于C = C - A.
4	*= (Multiply and Assignment) 它将右操作数与左操作数相乘，并将结果赋给左操作数。	C * = A等于C = C * A.
5	/= (Divide and Assignment) 它将左操作数与右操作数分开，并将结果赋给左操作数。	C/= A相当于C = C/A.
6	%= (Modules and Assignment) 它使用两个操作数来获取模数，并将结果赋给左操作数。	C％= A等于C = C％A

Note - 相同的逻辑适用于按位运算符，因此它们将变为“”=，“”=，“”=，＆=，| =和^ =。

例子 (Example)

以下示例演示了CoffeeScript中赋值运算符的用法。将此代码保存在名为assignment _example.coffee的文件中

a = 33
b = 10
console.log "The value of a after the operation (a = b) is "
result = a = b
console.log result
console.log "The value of a after the operation (a += b) is "
result = a += b
console.log result
console.log "The value of a after the operation (a -= b) is "
result = a -= b
console.log result
console.log "The value of a after the operation (a *= b) is "
result = a *= b
console.log result
console.log "The value of a after the operation (a /= b) is "
result = a /= b
console.log result
console.log "The value of a after the operation (a %= b) is "
result = a %= b
console.log result

打开command prompt并编译.coffee文件，如下所示。

c:/> coffee -c assignment _example.coffee

在编译时，它为您提供以下JavaScript。

// Generated by CoffeeScript 1.10.0
(function() {
  var a, b, result;
  a = 33;
  b = 10;
  console.log("The value of a after the operation (a = b) is ");
  result = a = b;
  console.log(result);
  console.log("The value of a after the operation (a += b) is ");
  result = a += b;
  console.log(result);
  console.log("The value of a after the operation (a -= b) is ");
  result = a -= b;
  console.log(result);
  console.log("The value of a after the operation (a *= b) is ");
  result = a *= b;
  console.log(result);
  console.log("The value of a after the operation (a /= b) is ");
  result = a /= b;
  console.log(result);
  console.log("The value of a after the operation (a %= b) is ");
  result = a %= b;
  console.log(result);
}).call(this);

现在，再次打开command prompt并运行CoffeeScript文件，如下所示。

c:/> coffee assignment _example.coffee

执行时，CoffeeScript文件生成以下输出。

The value of a after the operation (a = b) is
10
The value of a after the operation (a += b) is
20
The value of a after the operation (a -= b) is
10
The value of a after the operation (a *= b) is
100
The value of a after the operation (a /= b) is
10
The value of a after the operation (a %= b) is
0