In JavaScript if I have this value in a variable...
var selectedId = '2';
And I have this array of objects below....
var itemsArray = [
{
id: 1,
name: 'Item 1',
},
{
id: 2,
name: 'Item 2',
},
{
id: 3,
name: 'Item 3',
},
{
id: 4,
name: 'Item 4',
},
];
How can I get the itemsArray
name
value from the object that the value selectedId
has.
In this example I would have the value of 2
in selectedId
and need to get the itemsArray[n][name]
of Item 2
You can use .filter
like this
var selectedId = 2; var itemsArray = [ { id: 1, name: 'Item 1', }, { id: 2, name: 'Item 2', }, { id: 3, name: 'Item 3', }, { id: 4, name: 'Item 4', }, ]; var result = itemsArray.filter(function (el) { return el.id === selectedId; }); var name = result[0] && result[0].name; console.log(name);
This might be what you need:
// Give me everything in itemsArray where:
itemsArray.filter(function(item){
// its id is the one I'm looking for,
return (item.id === selectedId)
// and give them to me in this form:
}).map(function(element){
// just the name
return element.name
})
map() and filter(), along with reduce() and forEach(), can be extremely interesting and useful. Especially if you're using this problem to better understand arrays or programming, I'd suggest learning how to use them all.
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