constcheckKey =(obj, keyName) =>{letkeyExist =Object.keys(obj).some(key=>key === keyName);console.log(keyExist); }; checkKey(user,'name');// Return true Usingsome()for an Array letnumber = [12,33,14,45];// Check if key existsnumber.some(value=>value ===1);// Returns ...
Here, we have discussed how to check whether the value exists within the array or not. There are various ways to do this, but we have discussed three ways.
12 How to check if key exists in array of object 1 how to check if a object in an array contains a key or not in React 4 Javascript check if string exists in array of objects 0 Check if a value of an array exist in an object in a different array 0 Check if...
functioncheckTrueUsingArraySome(array) {if(array.some((item)=>item===true)) {returntrue;}returnfalse;}vararrayVariable=[false,false,true,false,true];vararrayVariable1=[false,false,false,false,false];console.log(checkTrueUsingArraySome(arrayVariable));//trueconsole.log(checkTrueUsingArraySome(ar...
Method 2: Using the indexOf() method to check an array: It is the simplest and fastest way to check whether a JS array contains an item or not. The JavaScript Array.indexOf() method checks a JS array for a given value or item, and if it finds the item in the array, it returns...
Instead of creating a new array. var filteredArr = Array.prototype.filter.call(arr, function(item) { return item.value == "G27" && iem.title == "G27"; }); if(filteredArr.length > 0) { // Item exists } Share Improve this answer Follow answered May 21, 2015 at 9:28...
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Vue Js Check Property Exist in Object: In Vue.js, you can check if a property exists in an object using the hasOwnProperty method or the in operator.The hasOwnProperty method checks whether the object has a property with the specified name and ret
check if computer exist in ou Check if drive exists, If not map Check if Email address exists in Office 365 and if exists, Create a Unique Email address Check if event log source exists for non admins Check if file created today and not 0 KB Check if HyperThreading is enabled Check if...
2 dimensional ArrayList in VB.NET? 2 minutes before session timeout, warn the user and extend it 2D array - How to check if whole row or column contain same value 302 is sent back to browser when response.redirect is used. can it be manupulated 403 - Forbidden: Access is denied. 404...