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This article mainly introduces how to use the additive operator in the ECMAScript operator, which is very detailed and has a certain reference value. Friends who are interested must read it!

The addition operator, the normal operator is represented by the plus sign (+)

Addition has some special behaviors when dealing with special values:

1. If a certain Operand is NaN, then the result is NaN

2.-Infinity plus-Infinity, the result is-Infinity

3. Infinity plus-Infinity, the result is NaN

4. + 0 plus + 0, the result is + 0

5.-0 plus + 0, the result is + 0

6.-0 plus-0, the result is-0

7. No automatic type conversion

Chestnut presents:

1. If a certain Operand is NaN, the result is NaN

Console.log (NaN + 30); / / NaN

2.-Infinity plus-Infinity, the result is-Infinity

Console.log (- Infinity +-Infinity); / /-Infinity

3. Infinity plus-Infinity, the result is NaN

Console.log (- Infinity + Infinity); / / NaN

4. + 0 plus + 0, the result is + 0

Console.log (+ 0) + (+ 0); / / 0

5.-0 plus + 0, the result is + 0

Console.log (- 0) + (+ 0); / / 0

6.-0 plus-0, the result is-0

Console.log (- 0) + (- 0); / / 0

7. No automatic type conversion

Console.log ("13" + 13); / / 1313

Console.log ("cgl" + 13); / / cgl13

Subtraction operator, subtraction operator (-), is also a commonly used operator:

Some special behaviors of the subtraction operator when dealing with special values:

1. If a certain Operand is NaN, then the result is NaN

2. Infinity minus Infinity, the result is NaN

3.-Infinity minus-Infinity, the result is NaN

4. Infinity minus-Infinity, the result is Infinity

5.-Infinity minus Infinity, the result is-Infinity

6. + 0 minus + 0, the result is + 0

7.-0 minus 0, and the result is-0

8. + 0 minus-0, the result is + 0

9. If an operator is not a number, the result is NaN

0. Automatic type conversion

1. If a certain Operand is NaN, the result is NaN

Console.log (NaN-30); / / NaN

2. Infinity minus Infinity, the result is NaN

Console.log (Infinity-Infinity); / / NaN function () {/ / follow order: www.gendan5.com

3.-Infinity minus-Infinity, the result is NaN

Console.log (- Infinity-(- Infinity)); / / NaN

4. Infinity minus-Infinity, the result is Infinity

Console.log (Infinity-(- Infinity)); / / Infinity

5.-Infinity minus Infinity, the result is-Infinity

Console.log (- Infinity-Infinity); / /-Infinity

6. + 0 minus + 0, the result is + 0

Console.log (+ 0-(+ 0)); / / 0

Seven,-0 minus 0, the result is-0

Console.log (- 0)-0); / /-0

8. + 0 minus-0, the result is + 0

Console.log (+ 0-(- 0)) / / 0

9. If an operator is not a number, the result is NaN

Console.log ("asd"-123); / / NaN

Automatic type conversion

Console.log (124123); / / NaN

These are all the contents of the article "how to use Additive operators in ECMAScript operators". Thank you for reading! Hope to share the content to help you, more related knowledge, welcome to follow the industry information channel!

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