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35 | 35 | |29 | [Detect if Browser Tab is in the view](#Detect-if-Browser-Tab-is-in-the-view)| |
36 | 36 | |30 | [Private class methods and fields](#Private-class-methods-and-fields)| |
37 | 37 | |31 | [Preventing paste into an input field](#Preventing-paste-into-an-input-field)| |
| 38 | +|32 | [The void operator](#The-void-operator)| |
38 | 39 |
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39 | 40 |
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40 | 41 |
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@@ -658,5 +659,19 @@ pasteBox.onpaste = (e) => { |
658 | 659 | ``` |
659 | 660 | |
660 | 661 | |
| 662 | +**[⬆ Back to Top](#table-of-contents)** |
| 663 | +### The void operator |
| 664 | +The void operator evaluates the given expression and then returns undefined. |
| 665 | +```javascript |
| 666 | + |
661 | 667 |
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| 668 | +void 0; //returns undefined |
| 669 | +void (0); //returns undefined |
| 670 | +void {}; //returns undefined |
| 671 | +void "JSsnippets; //returns undefined |
| 672 | +void (0); //returns undefined |
| 673 | +void (2 == '2'); //returns undefined |
| 674 | +void anyfunction(); //returns undefined |
| 675 | + |
| 676 | +``` |
662 | 677 | |
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