js object in array code example
Example 1: js get array item by property
const jsObjects = [
{id: 1, displayName: "First"},
{id: 2, displayName: "Second"},
{id: 3, displayName: "Third"},
{id: 4, displayName: "Fourth"}
]
// You can use the arrow function expression:
var result = jsObjects.find(obj => {
// Returns the object where
// the given property has some value
return obj.id === 1
})
console.log(result)
// Output: {id: 1, displayName: "First"}
Example 2: list javascript
//Creating a list
var fruits = ["Apple", "Banana", "Cherry"];
//Creating an empty list
var books = [];
//Getting element of list
//Lists are ordered using indexes
//The first element in an list has an index of 0,
//the second an index of 1,
//the third an index of 2,
//and so on.
console.log(fruits[0]) //This prints the first element
//in the list fruits, which in this case is "Apple"
//Adding to lists
fruits.push("Orange") //This will add orange to the end of the list "fruits"
fruits[1]="Blueberry" //The second element will be changed to Blueberry
//Removing from lists
fruits.splice(0, 1) //This will remove the first element,
//in this case Apple, from the list
fruits.splice(0, 2) //Will remove first and second element
//Splice goes from index of first argument to index of second argument (excluding second argument)
Example 3: javascript find object by property in array
// To find a specific object in an array of objects
myObj = myArrayOfObjects.find(obj => obj.prop === 'something');
Example 4: javascript array
//create an array like so:
var colors = ["red","blue","green"];
//you can loop through an array like this:
for (var i = 0; i < colors.length; i++) {
console.log(colors[i]);
}
Example 5: array of objects javascript
var widgetTemplats = [
{
name: 'compass',
LocX: 35,
LocY: 312
},
{
name: 'another',
LocX: 52,
LocY: 32
}
]
Example 6: return an object from an array javascript
myArray.find(item => item.isAstronaut)