You could implement your own pretty easily. In this case, we make the function generic, so that it can take arrays of any data type(s) and union them using the comparator function provided. // arr1 and arr2 are arrays of any length; equalityFunc is a function which // can compare two items and return true … Read more
You can use [innerHtml] something like <div [innerHtml]=”myTemplate”> </div> In your component export public class MyComponent { private myTemplate: any = “”; constructor(http: Http) { http.get(myExternalPageLink).map((html:any) => this.myTemplate = html); } }
You could use rest parameters … and check the length of the rest array for another calling of the generator function* flat(a, …r) { if (Array.isArray(a)) { yield* flat(…a); } else { yield ‘foo’ + a; } if (r.length) { yield* flat(…r); } } var obj = [1, 2, 3, [4, 5, [6, 7, 8], … Read more
It’s the same as defining the function as a variable but just adding export to the front e.g. (using ES6 syntax) export const render = () => ( // Some other JSX ); or alternatively export var render = function() { return ( // Some other JSX ); };
No, there is no way. Functions detached from objects lose the original context. And destructing in JavaScript has no syntax to do something with extracted values on the fly.
As I understand it ECMA6 generators are supposed to be able to yield to a function that returns a promise, eventually returning the resolved/rejected. No, that’s not their purpose. ES6 generators are supposed to provide a simple way for writing iterators – each call to a generator function produces an iterator. An iterator is just … Read more
You can use the entries function. It will return a index/value pair for each entry in the array like: [0, “one”] [1, “two”] [2, “three”] Use this in tandem with array destructuring to resolve each entry to the appropriate variable name: const arr = [“one”, “two”, “three”] for(const [index, value] of arr.entries()) { console.log(index, value); … Read more
You can use reduce() to create new object and includes() to check if value of object exists in array. const acceptedValues = [“value1”, “value3”] const myObject = { prop1: “value1”, prop2: “value2”, prop3: “value3” } var filteredObject = Object.keys(myObject).reduce(function(r, e) { if (acceptedValues.includes(myObject[e])) r[e] = myObject[e] return r; }, {}) console.log(filteredObject)
var sym = Symbol(); is creating a new property sym in dictionary(window), which is in global scope, where value can be accessed as window[‘sym’]. Well, no. It does create a symbol and assigns it to a local variable named sym. Only if you are executing this code in the global scope (which you usually wouldn’t, … Read more
Update When using Node, the file currently must have an .mjs extension to work. Top level awaits can be used in browser modules. When used the script tag must include the type attribute which must be set to module: <script src=”/script.js” type=”module”></script> const start = Date.now() console.log(‘Pre call.’) await delayedCall() console.log(‘Duration:’, Date.now() – start) function … Read more