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# Javascript this

### Interpretation on `this` <a href="#interpretation-on-this" id="interpretation-on-this"></a>

The binding `this` in javascript can be interpretated as, if there is a `this` pointer in function:

* If you want to passing function around, or ensure using `this` in current context, **MUST** use arrow function `() => {}`;
* If you want to use `this` in some other context, late binding, use `function(){}`

To make things even easier, rules **(almost a silver bullet)** can be:

**ONLY** use `function(){}`, if you want to use a late bound `this`.