[Solved] find and differentiate words in javascript [closed]

If it is about the longest possible matching (sub)string, thus the most specific one, the task actually can be solved pretty easy. sort the array descending by each of its string-item’s length property. Iterate the array … for each string item, try whether it is included within the given text. Stop iterating with the first … Read more

[Solved] Is 0 considered true in ES6?

This is a list of all falsy values in javascript: false 0 ” or “” null undefined NaN Only the String ” is a falsy value, meaning that it is an empty string. ‘0’ is a string with content so it isn’t a falsy value, but 0 is one. solved Is 0 considered true in … Read more

[Solved] Is 0 considered true in ES6?

Introduction In ES6, the concept of truthiness is an important concept to understand. It is a concept that determines whether a value is considered true or false. In this article, we will discuss whether 0 is considered true in ES6. We will look at the different ways that 0 can be evaluated and how it … Read more

[Solved] Get Full Date Only in Regex [closed]

You may use the following regex pattern: (?:Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec) \d{1,2}(?: \d{4})? var dates = [“Nov 29 2019”, “abc 0 May 30 2020”, “ddd Apr 3 2021 efg”, “0 Jan 3 hellodewdde deded”, “Green eggs and ham”]; var months = “(?:Jan|Feb|Mar|Apr|May|Jun|Jul|Aug|Sep|Oct|Nov|Dec)”; var regex = new RegExp(months + ” \\d{1,2}(?: \\d{4})?”); var matches = []; for (var i=0; … Read more

[Solved] need to create new array called result with key/value from posts and inside that reviews array with user and comment key/value objects

Use map with filter: let posts = [{ “id”: 101, “title”: “Some post title” }, { “id”: 102, “title”: “Some Another post title” }, { “id”: 103, “title”: “Some Best post title ever” } ] let reviews = [{ “postId”: 101, “user”: “Chris”, “comment”: “Great post!” }, { “postId”: 101, “user”: “Jason”, “comment”: “Worth reading.” … Read more

[Solved] whats wrong with the below code?

You can’t use variables (let, var, const) within classes like that. You need to write a constructor and within the constructor, you can define what attributes the class should have, e. g. color. For methods, you simply write the methods name (without function or the ES6 syntax). class A { constructor() { this.color = “red”; … Read more

[Solved] Why doesn’t promisify want the argument for the callback function?

I mean opA is a function, so why not opA()? Because opA is a reference to the function itself. The promise will use that reference to execute that function at a later time. Alternatively, opA() executes the function (without any arguments) now and passes the result of that function call to the promise. Since your … Read more

[Solved] move key to sub array js [closed]

You can use .map(), .concat() and Object.assign() methods to get the resultant array: let data = [ {Name: ‘Color’, Data:[{Id: 1, Name: ‘Red’}, {Id: 2, Name: ‘Yellow’}, {Id: 3, Name: ‘Blue’}, {Id: 4, Name: ‘Green’}, {Id: 7, Name: ‘Black’}]}, {Name: ‘Size’, Data:[{Id: 8, Name: ‘S’}, {Id: 11, Name: ‘M’}, {Id: 12, Name: ‘L’}, {Id: 13, … Read more

[Solved] Sort big array into smaller by value in objects

You can easily group by name to get what you need. Below is a quite general function to group any array of objects to a Map, by specified property. Then simply make it an array and you’re done function group(arr, propertyToGroupBy) { return arr.reduce(function(a, b) { return a.set(b[propertyToGroupBy], (a.get(b[propertyToGroupBy]) || []).concat(b)); }, new Map); } … Read more

[Solved] Merging objects by property, accumulating another property in node

var sales = [ { order_id: 138, price: 25, }, { order_id: 138, price: 30, }, { order_id: 139, price: 15, }, { order_id: 131, price: 25, }, ]; var buf = {} sales.map(obj => { if(buf[obj.order_id]) { buf[obj.order_id].price += obj.price } else { buf[obj.order_id] = obj } }) var result = Object.values(buf) console.log(result) 1 … Read more