Javascript Array odd() Copy // augmentation/*fromwww.java2s.com*/Array.prototype.odd =function() {varodd =function(value, index) {if((index + 1) % 2) {returnvalue; } };returnthis.filter(odd); };// usagevara = [1, 2, 3, 4,'odd','even'];varaOdd = a.odd(); console.log(...
您可以使用更新的偶数/奇数属性返回一个新对象,以便acc在所有迭代过程中保持为对象: const nums = [1,2,3,4,5,6,7,8,9]; function getOddEven(numbers){ return numbers.reduce((acc, cuu) => cuu % 2 === 0 ? {odd: acc.odd, even: acc.even + cuu} : {even: acc.even, odd: acc.odd...
The typeof statement is useful in JavaScript for data validation and type checking, but it has some odd features to be aware of.There are two instances when typeof returns "object" in an unexpected way, and this makes type checking a little unusual....
We create an array of numbers and group them into 'even' and 'odd' categories. The callback function checks each number's parity and returns the appropriate group key. The result contains two arrays under the 'even' and 'odd' keys. ...
Write a JavaScript function that handles arrays with a single element or empty arrays appropriately when checking for trends. Improve this sample solution and post your code through Disqus. Previous:Iterated Cube Root. Next:Even, odd numbers and their sum in an array....
- This is a modal window. No compatible source was found for this media. Reduce the array to a single element by repeatedly removing an element from any increasing pair Kickstart YourCareer Get certified by completing the course Get Started ...
In the above example, we have created the checkEven() function that checks whether a given number is even or not. We then call the every() method on the numbers array. Since there is an odd number (7) in the array, we get false as an output....
console.log(firstEven);// 8// using arrow operator letfirstOdd = randomArray.find((element) =>element %2==1); console.log(firstOdd);// 1 Run Code Output 8 1 Example 2: find() with Object elements constteam = [ {name:"Bill",age:10}, ...
For merging two arrays Scala provides you multiple methods and we will discuss them one by one in this article.1) Using the concat() methodIn Scala, there is a method named concat() that is used to concatenate two arrays.Syntaxconcat(array_1, array_2) ...
}letrandomArray = [1,45,8,98,7];letfirstEven = randomArray.find(isEven);console.log(firstEven);// 8// using arrow operatorletfirstOdd = randomArray.find((element) =>element %2==1);console.log(firstOdd);// 1 输出 8 1 示例2:find() 与对象元素 ...