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Update bindKey.md

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Angelos Chalaris
2018-08-10 10:47:56 +03:00
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snippets/bindKey.md
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Creates a function that invokes the method at a given key of an object, optionally adding any additional supplied parameters to the beginning of the arguments. Creates a function that invokes the method at a given key of an object, optionally adding any additional supplied parameters to the beginning of the arguments.
Return a `function` that uses `Function.apply()` to bind `context[fn]` to `context`. Return a `function` that uses `Function.apply()` to bind `context[fn]` to `context`.
Use spread operator to prepend any additional supplied parameters to the arguments. Use the spread operator (`...`) to prepend any additional supplied parameters to the arguments.
```js ```js
const bindKey = (context, fn, ...boundArgs) => (...args) => context[fn].apply(context, [...boundArgs, ...args]); const bindKey = (context, fn, ...boundArgs) => (...args) => context[fn].apply(context, [...boundArgs, ...args]);