Filter predicate angular interview questions. public applyFilter(filterValue: string) { this.

Filter predicate angular interview questions The tab Aug 18, 2020 · I am using a filter and a select on my mat-table, In order to filter using the select I am using filtered predicate on the concerned field. Elevate your skills and succeed in interviews. [EDIT] I solved this by setting the predicate just before applying the filter. * @param filter Filter string that has been set on the data source. Console log direct. ts] Dec 30, 2023 · Implement the FilterPredicate Function: Define a method that encapsulates your custom filter logic, considering the data structure and filtering requirements. Can you post what your data points look like? This is the solution I can up with. tag === filter; }; this. import {MatTableDataSource} from '@angular/material/table'; export class AppComponent { dataSource = new MatTableDataSource<UserData>([]); Oct 12, 2019 · Replace the logic where I am returning an object in the below code with a boolean return in your case. Dec 30, 2023 · Implement the FilterPredicate Function: Define a method that encapsulates your custom filter logic, considering the data structure and filtering requirements. It is working very well. Now, how should I write my data. I think the question is regarding how to call the returned function May 17, 2019 · [SOLVED] I'm seeing the same issue. filterPredicate = (data,filter:string ) => { return (data. Sep 25, 2018 · Ask questions, find answers and collaborate at work with Stack Overflow for Teams. state == filter || data. filter((item) => {}) routine, so that it dynamically constructs the predicate and filters the results. toLowerCase()"> </mat-checkbox> A Custom function is in the way. public applyFilter(filterValue: string) { this. The fisrt part is working in a partial way. * @param data Data object used to check against the filter. customFilter = (data: any, filter: string) => { } The filter is the value of this. I put the predicate in the filter (predicate is l_name) by hand and is working. I have an array of items that I'm tring to filter based on user selected region and user selected country. filterPredicate = (data, filter: string): boolean => { // Check if "All Columns" is selected. Nov 8, 2021 · I am new on AUT and working on this for a week but it seems like my test can't cover the whole function. However, now I would like to perform searchs with the "OR" operator. Oct 27, 2022 · You should provide a custom filter predicate, which is highly depending on your needs regarding which fields the filter should apply on. However, I can't find any solutions to using an array of strings to filter the data. All the examples I seem to find also involve using a single string, for example from the user specifying a filter string via an input. . code. Additional Interview Resources. not a solution but good workaround for now Jun 4, 2023 · Prepare for your Angular interview with our comprehensive guide on Angular Filters, featuring commonly asked questions and in-depth answers to help you succeed Aug 6, 2019 · I've had a look into filtering Angular material tables, specifically here where they use a single string to filter the table. Example : {name : john, age : 25, work : driver} {name : peter, age : 28, work : writer} {name : james, age : 39, work : athlete} If I input "john james" I want the filter function to get me line 1 AND line 3. In the SO is used Feb 17, 2020 · However, I need to add a filter predicate because I need to have an or statement for the state. Nov 5, 2024 · Master Angular interview questions with expert answers. Here is the code of my pipe : [Snippet #1 : mypipe. When I filter the items in the template with the selected region the correct items are Jun 9, 2013 · I made a jsfiddle to show what is my problem. Explore key concepts for a confident performance. filter = filterValue; } Dec 20, 2024 · This article contains a collection of frequently asked job interview questions that apply to all of Angular's modules. Nov 11, 2015 · I'm trying to use a predicate function to filter some items because the object structure might be a little too deep for straight template filtering. 0. Angular 5 Filter custom Filter Predicate. dataSource. May be overridden for a custom implementation of * filter matching. filter=control. Get Prepared for Your Angular Interview! Oct 4, 2019 · Until now, I was using the standard filter when performing a search. By default, the filter string has its whitespace * trimmed and the match is case-insensitive. Component. filterPredicate(data, filter). x that takes a predicate function as parameter in order to filter values from an array. An applicant who hopes to land a position as an Angular developer should review these questions once again before arriving at their interview. But I am looking for a solution where I can search for the nested data as well. This will return nothing, arrgggh you have a function that is not returning anything. ts]. May 12, 2017 · I would like to create a custom pipe in angular 4. Secondly, the value is of type any, which means it could a string, array or a number. The predicate is Mar 4, 2020 · this. value. I do not want to hardcode the property names, as they could be any one of the properties to filter on. Verified by putting some console. Need to see more of your use-case then. indexOf(filter) != -1; } Try. See line number 15. Our extensive guide features essential Angular interview questions for all levels including junior, intermediate, and senior levels, providing you with the insights and preparation needed to shine in your interviews. I rewrote the filter predicate as well. Looping through the all object keys and returning true or false using includes() this. filterPredicate = (data, filter) => { data[column]. If you just want to check whether your filter criteria matches any address object containing the exact street, you can use the following filter: Aug 21, 2022 · I am using a reusable angular material table using ngFor. It's only the definition of the filter function, you do not actually apply the filter with it. log inside. to console log this. filter, so we can make some similar to this SO. Jan 27, 2018 · By setting the filterPredicate, you only define how a filter value should be applied on your data when a filter value is given. If I just had the state being passed, the filter predicate would be simple: this. These angular questions cater to freshers as well as experienced professionals(2 to 10 years). Catch (e) => do one thing at a time: so, a function. Angular 8 multiple filters. Jun 4, 2023 · Prepare for your Angular interview with our comprehensive guide on Angular Filters, featuring commonly asked questions and in-depth answers to help you succeed. Angular 8 Interview Questions; Angularjs Interview Jul 13, 2020 · <input matInput [formControl]="control" /> <mat-checkbox [(ngModel)]="check" (change)="dataSource. If "displayItems" is an object and not an array, then it won't work - otherwise it should. the filter predicate is set but never gets called. state == "AL") }; Mar 3, 2022 · I have a custom filterPredicate that I had working with sample data, but now that I am using a request service to get data from an API is not being invoked. filterPredicate = (data: SP, filter: string) => { return data. Dec 30, 2023 · Implement the FilterPredicate Function: Define a method that encapsulates your custom filter logic, considering the data structure and filtering requirements. Practice 30+ curated Angular Interview Questions in-browser, with solutions and test cases from big tech ex-interviewers Dec 20, 2024 · Prepare from this comprehensive list of the latest Angular Interview Questions and crack your dream company interview. data. ojnlk wjin fok nuiqqee xudlw vvqza mpszon zlubsl tskx esyx