before insertion:
var arr = [
{
id:1,
name:""
},
{
id:2,
name:""
}
]
after insertion:
var arr = [
{
id:1,
name:"",
age:18
},
{
id:2,
name:"",
age:21
}
]
how to achieve this with js?
/**
*
* @param {Array} arr
*/
function newArr(arr) {
var arr = arr.slice(0); //
arr.forEach(function(val, ind) {
val.age = parseInt(Math.random()*25); // 0-24 age
})
return arr;
}
var arr = [
{
id:1,
name:""
},
{
id:2,
name:""
}
];
console.log(newArr(arr));can also be changed to:
/**
*
* @param {Array} arr
*/
function newArr(arr) {
return arr.map(function(val, ind) {
return {
id: val.id,
name: val.name,
age: parseInt(Math.random()*25) // 0-24 age
}
});
}
var arr = [
{
id:1,
name:""
},
{
id:2,
name:""
}
];
console.log(newArr(arr));let newArr = arr.map(obj => {
return {
id: obj.id,
name: obj.name,
age: 18
}
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