ecmascript-6 Archives - Page 3 of 9

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Is there a mechanism to loop x times in ES6 (ECMAScript 6) without mutable variables?

The typical way to loop x times in JavaScript is: for (var i = 0; i < x; i++) doStuff(i); But I don’t ...

May 27, 2022
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Concatenating variables and strings in React

Is there a way to incorporate React’s curly brace notation and an href tag? Say we have the following value in the state: ...

May 25, 2022
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Unable to access React instance (this) inside event handler [duplicate]

This question already has answers here: How to access the correct `this` inside a callback (13 answers) Closed 2 years ago. I am ...

May 24, 2022
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How do you JSON.stringify an ES6 Map?

I’d like to start using ES6 Map instead of JS objects but I’m being held back because I can’t figure out how to ...

May 24, 2022
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How do I write a named arrow function in ES2015?

I have a function that I am trying to convert to the new arrow syntax in ES6. It is a named function: function ...

May 23, 2022
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What is “function*” in JavaScript?

In this page I found a new JavaScript function type: // NOTE: "function*" is not supported yet in Firefox. // Remove the asterisk ...

May 22, 2022
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Simplest way to merge ES6 Maps/Sets?

Is there a simple way to merge ES6 Maps together (like Object.assign)? And while we’re at it, what about ES6 Sets (like Array.concat)? ...

May 21, 2022
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ES6 map an array of objects, to return an array of objects with new keys [duplicate]

This question already has answers here: ECMAScript 6 arrow function that returns an object (6 answers) Closed 5 years ago. I have an ...

May 20, 2022
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Why es6 react component works only with “export default”?

This component does work: export class Template extends React.Component { render() { return ( <div> component </div> ); } }; export default Template; ...

May 20, 2022
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ES6 exporting/importing in index file

I am currently using ES6 in an React app via webpack/babel. I am using index files to gather all components of a module ...

May 20, 2022
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