let fruits = ['apple' , 'cherry', 'grape', undefined, 'lemon' ,'melon'];
i have those array of fruits. i want to replace undefined with another fruit, and return all the array with new fruit included. how to do that using array method in javascript i do need help
You use .splice to replace undefined with new fruit. But just note that it's also possible to achieve it with .map and .filter
let arr = ['apple' , 'cherry', 'grape', undefined, 'lemon' ,'melon'];
let index = arr.indexOf(undefined)
arr.splice(index, 1, 'new fruit')
console.log(arr)This is a basic example of what loops are used for. You can use for, or forEach.
let fruits = ['apple' , 'cherry', 'grape', undefined, 'lemon' ,'melon'];
fruits.forEach((fruit,index) => {
if(fruit == undefined) {
fruits[index] = 'Some other fruit'
}
})
console.log(fruits)
One of ways we can do this is also by using maps as norbekoff told. But the result should be stored in a new Array.If you want to do it inplace then you can go with splice method.
let arr = ['apple' , 'cherry', 'grape', undefined, 'lemon' ,'melon'];
let newArr=arr.map((ele)=>{
if(!ele){
ele="new Fruit";
}
return ele;
});
console.log(newArr);
