In JavaScript, the compound assignment with augmented subtraction operator is written as -=. It is used to subtract a value from a variable and assign the result to the variable. Here is an example of how it can be used:
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let x = 10; x -= 5; console.log(x); // Output: 5
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In the example above, the value of x is first set to 10. Then, the compound assignment with augmented subtraction operator is used to subtract 5 from x and assign the result (5) back to x. Finally, the value of x is logged to the console and it is output as 5.
You can also use the compound assignment with augmented subtraction operator to subtract a variable from another variable, like this:
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let x = 10; let y = 5; x -= y; console.log(x); // Output: 5
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In this example, the value of x is first set to 10 and the value of y is set to 5. Then, the compound assignment with augmented subtraction operator is used to subtract the value of y from x and assign the result (5) back to x. Finally, the value of x is logged to the console and it is output as 5.
Here are a few more examples of how the compound assignment with augmented subtraction operator can be used in JavaScript:
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let x = 10; x -= 3; console.log(x); // Output: 7 let y = 20; y -= 5; console.log(y); // Output: 15 let z = 100; z -= z; console.log(z); // Output: 0
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In the first example, the value of x is set to 10 and then 3 is subtracted from it using the compound assignment with augmented subtraction operator. The result (7) is then assigned back to x and logged to the console.
In the second example, the value of y is set to 20 and then 5 is subtracted from it using the compound assignment with augmented subtraction operator. The result (15) is then assigned back to y and logged to the console.
In the third example, the value of z is set to 100 and then z is subtracted from itself using the compound assignment with augmented subtraction operator. The result (0) is then assigned back to z and logged to the console.
