js what is underscore
The Underscore _ Identifier A convention has also developed regarding the use of _, which is frequently used to preface the name of an object's property or method that is private. This is a quick and easy way to immediately identify a private class member, and it is so widely used, that almost every programmer will recognize it.
using underscore javascript number
//When working with large numbers it can be hard to read them out, //try to read this value for example: const value = 100000000; //Numeric separators are a JavaScript feature //that allows you to use underscore as a separator in numeric literals, //for example, you can write 10000 as 10_000. //The feature works in recent versions of modern browsers as well as Node.js. //When we apply this to the top example we can easily read out the value: const value = 100_000_000; //The numeric separator also works on octal, hex, and binary numbers: const octalValue = 0o32_12; const hexValue = 0xff_55_00; const binaryValue = 0b1010_1011_1111; //Now let's keep those numbers easy to read! //https://writingjavascript.com/what-are-numeric-separators#:~:text=Numeric%20separators%20are%20a%20JavaScript,js.
underscore javascript
private void Foo() {} this._foo();
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