I know how to operate on array of objects but never had the necessity to push one array data into another. I need to push an array of objects into another array with only 2 fields of the object. Right now my object format is somewhat like this
data: [{
"name": "Btech",
"courseid": "1",
"courserating": 5,
"points": "100",
"type": "computers"
},
{
"name": "BCom",
"courseid": "2",
"courserating": 5,
"points": "100",
"type": "computers"
}];
I want to push this into another array but I want only courseid and name in the object. I've read that we need to initialise the object in the constructor, use slice() and a few other functions and then push but I don't know how can I do it for mine since I need to push one array data into another.Kindly someone help me in this regard.
You're looking for the array map() method:
const newArray = array.map(o => {
return { name: o.name, courseid: o.courseid };
});
Try this:
let data = [{
"name": "Btech",
"courseid": "1",
"courserating": 5,
"points": "100",
"type": "computers"
},
{
"name": "BCom",
"courseid": "2",
"courserating": 5,
"points": "100",
"type": "computers"
}];
let other = []; // your other array...
data.map(item => {
return {
courseid: item.courseid,
name: item.name
}
}).forEach(item => other.push(item));
console.log(JSON.stringify(other))
// => [{"courseid":"1","name":"Btech"},{"courseid":"2","name":"BCom"}]
You can simply do it like this.
//assign your array of object to variable
var youArray:Array<any>= [{
"name": "Btech",
"courseid": "1",
"courserating": 5,
"points": "100",
"type": "computers"
},
{
"name": "BCom",
"courseid": "2",
"courserating": 5,
"points": "100",
"type": "computers"
}];
var resultArray:Array<any>=[] //empty array which we are going to push our selected items, always define types
youArray.forEach(i=>{
resultArray.push(
{
"name":i.name,
"courseid":i.courseid
});
});
console.log(resultArray)
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