Check if object as a specific value inside an array

Question

I need to check if data is have a type as acc-item, if yes then I need assign a value true or false to this variable hasAccordionLayout.

data = [  
           {  
              type:"text",
              text:"This is just text"
           },
           {  
              type:"acc-item",
              text:"This is acc-item"
           },
           {  
              type:"acc-item",
              text:"This is acc-item 2"
           },
           {  
              type:"text",
              text:"This is just text"
           }
        ];

This is what I tried, But want to do it in a better way

this.hasAccordionLayout = (this.data.filter( function(content) {
            if(data.type === 'acc-item') {
              return data;
            }
          })).length > 0? true: false;

You should check the [some](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/some) Array function — ndoes, Jul 18 '19 at 08:30
Possible duplicate of [How to determine if Javascript array contains an object with an attribute that equals a given value?](https://stackoverflow.com/questions/8217419/how-to-determine-if-javascript-array-contains-an-object-with-an-attribute-that-e) — barbsan, Jul 18 '19 at 08:43

Harun Or Rashid · Accepted Answer · 2019-07-18T08:41:13.703

3

You can use Array.prototype.some()

The some() method tests whether at least one element in the array passes the test implemented by the provided function. It returns a Boolean value.

 this.hasAccordionLayout = data.some(e => e.type === 'acc-item');

See this for live demo.

edited Jul 18 '19 at 08:41

answered Jul 18 '19 at 08:34

Harun Or Rashid

5,589
1
19
21

Ethan Vu · Answer 2 · 2019-07-18T08:33:28.003

0

Updated, you can use some() function:

data.some(item => item.type === 'acc-item');

edited Jul 18 '19 at 08:33

answered Jul 18 '19 at 08:32

Ethan Vu

2,911
9
25

Toothgip · Answer 3 · 2019-07-18T08:39:35.850

0

You can use the Array.prototype.find():

this.hasAccordionLayout = this.data.find( d => d.type === 'acc-item') != undefined

edited Jul 18 '19 at 08:39

answered Jul 18 '19 at 08:34

Toothgip

469
6
14

score 0 · Answer 4 · answered Jul 18 '19 at 08:35

try with some function like this:

data = [ { type:"text", text:"This is just text" }, { type:"acc-item", text:"This is acc-item" }, { type:"acc-item", text:"This is acc-item 2" }, { type:"text", text:"This is just text" } ];
        
const exist = key => data.some(ele=>ele.type === key);
        
console.log(exist('acc-item'));

Check if object as a specific value inside an array

4 Answers4