filter(function(element) { traverse_count += 1; if(item_count < 1 && element.a == 'something') { last_item_traverse_count = traverse_count; item_count += 1; return true; } return false; }); var item_last_index = arr.length - last_item_traverse_count; console.log(item_last_in...
Are you wondering how to get the last element of an array in JavaScript? JavaScript has a lot of built-in methods that can be used to manipulate arrays. Let’s find out what we can implement to access the last element of the array. Using length property Suppose, you have an array an...
First way: Using array.length property In array, we have alengthproperty by using that we can find how many elements present in an array if we subtractarr.length-1we can get the last element. Example: constusers=['sai','jim','alex','era'];constlastElement=users[arr.length-1];console...
11 Find the lastIndexOf() an object with a key in array of objects 0 Get the last Item which is an object from an array of objects 1 Find last nested n times object by its value 0 Get last element inside new array with key value from Object? 0 how to retrieve the last uniqu...
JavaScript Array lastIndexOf() The lastIndexOf() method returns the index of the last occurrence of a specified element in the array. Example let priceList = [10, 8, 2, 31, 10, 31, 65]; // finding the index of the last occurence of 31 let lastIndex = priceList.lastIndexOf(31...
I needed to get the first item from an array lately in JavaScript. Hmmmm … lemme think here. I remember that .pop() is for snagging the last item from the
Are you wondering how to get last element of an array in JavaScript?Suppose you have an array, like this:const colors = ['red', 'yellow', 'green', 'blue'] In this case the array has 4 items.You know you can get the first item using colors[0], the second using colors[1] and ...
Get the Last item in an Object in JavaScript Use theObject.keys()method to get an array of the object's keys. Use theObject.values()method to get an array of the object's values. Use theArray.pop()method to get the last key and value in the object. ...
JavaScript Array lastIndexOf() 方法返回可以在数组中找到给定元素的最后一个索引,如果不存在,则返回 -1。 用法: arr.lastIndexOf(searchElement, fromIndex) 这里,arr 是一个数组。 参数: lastIndexOf() 方法包含: searchElement - 要在数组中定位的元素。 fromIndex(可选)- 开始向后搜索的索引。默认情况下...
JavaScript 参考 JavaScript 标准内置对象 Array Array.prototype.lastIndexOf() 概述 lastIndexOf()方法返回指定元素(也即有效的 JavaScript 值或变量)在数组中的最后一个的索引,如果不存在则返回 -1。从数组的后面向前查找,从fromIndex处开始。 语法 arr.lastIndexOf(searchElement[,fromIndex]) ...