let values = dataSku.map(sku => {return map.skuInfo[sku].description})If map.skuInfo[sku] can potentially be null or undefined, how can I filter it out?
let values = dataSku.map(sku => {return map.skuInfo[sku].description})If map.skuInfo[sku] can potentially be null or undefined, how can I filter it out?
It seems like you are looking for a solution using the .filter method. This function is similar to .map and can help you filter out specific items based on certain conditions.
const values = dataSku
.filter(item => item.description !== undefined)
Depending on your data structure, the Array.filter documentation on MDN can provide more insights on how to use it effectively. This method removes all non-truthy return values from the array.
Your issue can be resolved with the following solution -
const itemDescriptions = dataSku.map(sku => map.skuInfo[sku]}).filter(skuInfo => typeof skuInfo !== "undefined").map(skuInfo => skuInfo.description);Here is a possible solution:
const properties = dataList.map(item => {
if (!propertyList.item) return;
return propertyList.item.description
})
This block of code will exit the function if propertyList.item evaluates to false.
You can use the following code snippet:
const filterNotNullAndUndefined = (sku) => (sku?.description !== null && sku?.description !== undefined);
const filterNotNUllAndUndefinedAndNonEmpty = (sku) => (sku?.description)
const sku = [
{id: 1, 'description': '1'},
{id: 2, 'description': null},
{id: 3, 'description': undefined},
{id: 4, 'description': ''},
null,
undefined
];
const result1 = sku?.filter(filterNotNUllAndUndefinedAndNonEmpty);
const result2 = sku?.filter(filterNotNullAndUndefined);
console.log(result1);
console.log(result2);
My vue2 component is structured as follows: <template> <p>Hello world</p> </template> <script> export default { name: 'Example' }; </script> <docs> Some documentation... </docs> In addition, I& ...
Hey there! I'm new to JavaScript and Jquery, and I need some help. My goal is to display text letter by letter when a button is clicked using the setTimeout function. However, I seem to be encountering some issues. Any assistance would be greatly appr ...
I have developed a jQuery script that is designed to search through a webpage for specific text and then perform an action based on the findings. My query is straightforward. If I want to apply this script to a current website, such as www.google.com, how ...
Currently in the process of developing a demo featuring a node.js C++ plugin, I encounter an issue with the conversion of an ARGB bitmap to RGBA format for HTML5 canvas integration. The performance of this conversion process is exceedingly slow, prompting ...
I have been struggling to figure out how to make this popup close when clicking outside of it. Currently, it only closes when clicked directly on it. Your assistance in this matter is greatly appreciated. Here is the HTML code: <h2>Popup</h2> ...
I am working with an AngularJS 1.7.2 component that includes several nested components: | parent | - child | - - child1 | - - child2 Within the parent component, I need to access the child1 component, specifically where the template starts with <div ...
I am currently using alchemy.js to display a graph, but I am encountering issues with showing the "onMouseOver" caption of the graph's node. The console is displaying some errors which you can see here. Here is the code snippet: <html> < ...
Currently, my product list is dynamically created using jQuery. I now need to implement filtering based on attributes such as color, size, and price. I found some code that filters the list items by their classes, which worked perfectly for someone else. ...
<ul id="CoreWebsiteTopHeader_6_list"><li><a class="navigation" href="/seller"><span class="editableLinks" data-id="32638" data-sort="110">Seller</span></a></li><li><a class="navigation" href="/about">&l ...
Initially, the program runs correctly. However, after pressing the sum or minus button, the function fails to execute. componentDidMount() { if(CONST.INTRO) { this.showIntro(); // display popup with next and previous buttons let plus = docume ...
I am feeling a bit lost when it comes to handling modules in Node.js. Here's my situation: I have created a server in one large file, utilizing Socket.io for real-time communication. Now, as my index.js has grown quite big, I want to break down the ...
I have encountered a problem while working on my Express.js project. The 'slug' variable that I defined in app.js is not being recognized in the controllers within the router. Is there a way to define these variables in a central location, as I w ...
I am working with a table and need to display only the rows that fall between two specific dates. <table id ="Table"> <thead> <tr> <th>Date</th> <th>Name</th> <th>Desc</th> </tr> </thead> ...
Currently, I am developing a node.js program that monitors the prices of different currencies. While I can successfully retrieve the prices, I would like the program to also display the names of the currencies along with their prices. In the code snippet b ...
Is there a way to call a function within a required module that is defined in the main program without copying or creating separate files? Main.js: var http = require('http'); var aFunc = function() {return 1;} var bFunc = require('./bFunc ...
When trying to select a link tag (a) with a specific data-attr, I encountered an issue. I currently use the following regex pattern: /<a.*?data-extra-url=".*?<\/a>/g. However, I noticed that this selection goes wrong when there are no line br ...
I'm trying to figure out how to store products in Vuex within my index component. import Vue from 'vue' import Vuex from 'vuex' import cart from "./modules/cart"; import createPersistedState from "vuex-persistedstate ...
Whenever I attempt to connect a controller to a template using the angular-ui-router $stateProvider, I encounter this error message: 'ShouldWorkController' is not a function. Got undefined. Surprisingly, when I define the controller within the ...
I am trying to populate a video player on my webpage with an array of videos. Here is the code I have so far: var current = 0; var videos = ["01", "02", "03", "04"]; function shuffle(array) { var currentIndex = array.length, temporaryValue, randomInde ...
When I try to call a function, I keep getting an error message that says "Uncaught TypeError: $(...).valid is not a function"... JS $('input[data-val=true]').on('blur', function() { $(this).valid(); }); HTML <div class="col-x ...