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Questions - ecmascript-5

How to search for a key in an object's prototype?

I have an Object which has Objects inside it like this: obj = { foo:{x}, bar:{y}, } i want to search for a key in the sub-objects prototype i.e bar in this context i have tried this so far without s...
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Icecreamdroid

javascript

node.js

ecmascript-5

Votes: 0

Answers: 2

Latest Answer

You can check recursively: const obj = { foo: { x: 'x' }, bar: { y: 'y' }, } const checkObjectProp = (o, p) => Object .keys(o) .some(k => k === p || (typeof o[k] === 'object' &&...
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Yosvel Quintero

Remove specific words from a string in an efficient way

I am trying to strip out a couple of matching words from an array of string. Below is the array containing the string let string = ["select from table order by asc limit 10 no binding"] I a...
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boomchickawawa

javascript

arrays

string

ecmascript-6

ecmascript-5

Votes: 0

Answers: 2

Latest Answer

Make an array or Set of the strings you want to remove, then filter by whether the word being iterated over is in the Set. const input = ["select from table order by asc limit 10 no binding"] cons...
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CertainPerformance

Is there a way to programmatically determine that a function is actually an object in Javascript?

In Javascript, functions are objects. Yet typeof of a function returns function instead of object for ECMAScript compatibility reasons. Is this function type actually some kind of wrapper for object t...
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brentonstrine

javascript

function

object

ecmascript-5

object-literal

Votes: 0

Answers: 1

Latest Answer

As the spec says: an object is a member of the built-in type Object; and a function is a callable object So Or in Javascript, is a function actually fundamentally different from objects? Not reall...
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CertainPerformance

Replace everything between two words including this words

How to change this tt /* a */ pp /* b */ dd to tt dd this not including a and b link var test = "tt /* a */ pp /* b */ dd"; // expected: var res = "tt dd"; Is it simple with rege...
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Lex

javascript

ecmascript-5

Votes: 0

Answers: 2

Latest Answer

If you want to remove something between two things, including those things, regex could do the trick pretty easily: const str = 'tt /* a */ pp /* b */ dd'; const start = '/\\* a \\*/'; const end =...
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samanime

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