Question 287024 in Javascript Question posted in
A very good W3school tutorial can be found here.

Javascript – search for key inside object

 {
    "id":805,
    "name":'test',
    "Email":[
    {
    "Name":"name1",
    "Email":"[email protected]"
    },
    {
    "Name":"name2",
    "Email":"[email protected]"
    }
    ..
    ..
    ],
    "createdDate":"..."
    },
    {
    "id":806,
    "name":'test',
    "Email":[
    {
    "Name":"name1",
    "Email":"[email protected]"
    },
    {
    "Name":"name2",
    "Email":"[email protected]"
    }
    ..
    ..
    ],
    "createdDate":"..."
    }





 this.data=this.data.filter((item=> this.selectedId.includes(item.id)));

where this.selectedId = [‘805′,’806’] 

let email='[email protected]';

if Email contains this [email protected] then that data also we need to show.

 this.data=this.data.filter((item=> this.selectedId.includes(item.id)) || Object.keys(item.Email).includes(email));
Tags:

2

Answers


  1. 0 
    function getKeyByValue(object, value) {
  return Object.keys(object).find(key => object[key] === value);
}


const map = {"first" : "1", "second" : "2"};
console.log(getKeyByValue(map,"2"));
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  2. 0

    Your syntax is incorrect for the lambda expression/function.

    While you can use the .find() with double negation (!!) to indicate the Email filter returns value.

    this.data = this.data.filter(item => this.selectedId.includes(item.id)
    || !!item.Email.find(x => x.Email == this.email));

    Or with .findIndex()

    this.data = this.data.filter(item => this.selectedId.includes(item.id)
    || item.Email.findIndex(x => x.Email == this.email) > -1);

    Note that with selectedId = ['805','806'], you will get the incompatible error as the ids provided in your data array are Number.

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