the scenario is i am having the file uploader, which accept .json,.csv file after having file, If i clicked on upload button ,then homeComponent call the service dataparser , which is having two function readJson readCsv, and readcsv function returning the observable other one returns array ,this is simple i have to call the both function on if else and
Tag: asynchronous
Why then doesn’t keep the order of the callbacks?
I have the following code: I thought that the output should be first ‘123’ and then ‘should wait’. From unclear reason the ‘should wait’ is printed first. I thought that the second then won’t start until the asynchrony function (setTimeout) won’t finished. I read that this is all the “magic” of using Promise and then. Now i’m very confused. Why
How to return object from MongoDb database in findOne method
sorry if it’s easy mistake, I’ve not so much experience in JS, I’ve tried a lot of ways and I can’t resolve this problem. I can find and print my object from database, but I can’t return it to my main method. My main method (it’s in another file than methods to database): and (before tries to debug this) my
Javascript/Typescript Export Default Const as value from async function call
i’ve done a bunch of reading but haven’t found a working solution the closest i’ve seen is here: Export the result of async function in React please keep in mind that I want to export an object, and that object is the result of an asynchronous function, NOT export the async function definition itself here’s my use case and implementation
How do I make processData function wait for the results from my getData function in Angular?
My getData function makes an api call, then puts each returned object into an array. The array is then returned. I now need my processData function to await the results from the getData function and then further process it. Currently I dont get any results when I console.log(cleaningData)What am I doing wrong with async/await? What am I missing? Answer In
Javascript: using catch block but not to handle an error
I’m in a situation where I have to use a catch block to execute some code but I don’t want to consider it an error. Basically, I want to update/create a user based on whether the user is already registered or not respectively. The admin sdk let me create a user, and if the user already exists it throws an
How to use async/await to get input from user but wait till entire condition statement is read before resolving?
I created a function that prompts the user for a URL, then validates that the entered input is actually a URL. The issue is, when I call this function from my other function, I have been able to get it to wait for user input before but it doesn’t go through the entire condition statement before returning the url. How
How to wait for a function, which calls itself recursively with setTimeout, to complete?
I am new to Javascript and currently working on a website, that changes how it looks by itself over time. One part of this page is a “Typewriter”, that writes out a text letter by letter. This is the code for this Typewriter: Now I want to wait for the typewriter-function to finish with its text before doing another change
Appended data to formData in node.js…the data which i am posting to my api is always showing null?
Recently I was trying to append a lot of HTML form values to MongoDB database through an async process this const createproperty are my MongoDB fields which i have taken in an array .. these ids are some id’s from the HTML form which i have put in an array this newproperty will give me the values from the Html
Promise.all() to await the return of an object property
Inside an async function i have a loop and inside this loop i need to use await to resolve a promise from another async function. It’s work fine, but eslint says to disallow await inside of loops and use Promise.all() to resolve all promises. The problem is that my promises are in an object property: How can i figure out