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component should be independent of the DOM structure
#javascript component-driven architecture
#javascript #fill
[0,1,2,3].fill(5); // [5,5,5,5]
[0,1,2,3].fill(5, start=2); // [0,1,5,5]
[0,1,2,3].fill(5, start=2, end=3); // [0,1,5,3]
not all programming languages can do this
var double = function(a) {
return a * 2;
};
deal with it
#javascript #functions are values
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Inheritance is when you design your types around what they are.
Composition is when you design your types around what they do.
#javascript
I remember when
var f = function (obj) {
return {
obj: obj
};
}
now
let f = (obj) => ({obj});
#javascript #ES6
factory functions are functions that creates objects and return them
#javascript #factoryfunctions #dontuseclassesplease
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Аневризма retweeted
A Jasmine custom matcher is just a method that returns an object that has a compare method that returns an object that has a “pass” property
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#javascript #ES6 #setPrototypeOf
Object.setPrototypeOf – changes prototype. Equivalent to Object.prototype.__proto__ setter
the 'default' export is just another named export.
import { default as foo } from 'lib';
import foo from 'lib';
#javascript #ES6 #modules
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#javascript #es6 deep array #destructuring
let [a, [b, [c, d]]] = [1, [2, [[[3, 4], 5], 6]]];
#es2015
Аневризма retweeted
RT @allsecretcoding Best Angular resources voted by community. 'Most Saved'🏆
@angularjs ... lnkplg.co/pZrEJ
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@blackendjero
it('async', () => {
deferred.promise.then(n => {
expect(n).toBe(4);
});
deferred.resolve(6);
$rootScope.$digest();
});
let deferred, $rootScope;
beforeEach(()=>{
inject($q, _$rootScope_){
deferred = $q.defer();
$rootScope = _$rootScope_;
});
});
#unittest
$provide.value('Service', {
get: () => {
return {then: callback => callback({o: 8})};
}
});
#angularjs #unittesting #mocking #promises
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Again... "no component should be allowed to mutate any data that is doesn't own" @teropa
changed my life, I'll stick with it
#javascript
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A function that returns a function that has a default parameter a function is one of the best things I love and learned from #javascript
Аневризма retweeted
Apple, Microsoft and Samsung must stop sourcing materials mined by child laborers tnw.me/eIydvT8 https://nitter.catsarch.com/t.co/dpes32DmXT
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