keys-in-object
v1.3.0
Published
Find if the provided key of an object exists and retrieve the value(s)
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1,957
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Keys In Object
A Javascript library for retrieveing easy Object key's values.
Installation
npm install keys-in-objectHow to use it
Node.js
var keysInObject = require('keys-in-object');
var users = {
id_1: {
name: 'John Doe',
email: '[email protected]'
},
id_2: {
name: 'Hohn Moe',
email: '[email protected]'
},
id_3: {
name: 'Joon Doo',
email: '[email protected]'
},
id_4: {
user_info: {
name: 'Johnny Foe',
email: '[email protected]'
}
}
};
var arrayOfUserNames = keysInObject(users, 'name');
console.log(arrayOfUserNames)
// ['John Doe', 'Hohn Moe', 'Joon Doo', 'Johnny Foe']Also you can pass an Array of Objects
var keysInObject = require('keys-in-object');
var user = {
id_1: {
name: 'John Doe',
email: '[email protected]'
},
id_2: {
name: 'Hohn Moe',
email: '[email protected]'
},
id_3: {
name: 'Joon Doo',
email: '[email protected]'
},
id_4: {
user_info: {
name: 'Johnny Foe',
email: '[email protected]'
}
}
};
var usersArray = [user, user];
var arrayOfUserNames = keysInObject(usersArray, 'name');
console.log(arrayOfUserNames)
//[
['John Doe', 'Hohn Moe', 'Joon Doo', 'Johnny Foe'],
['John Doe', 'Hohn Moe', 'Joon Doo', 'Johnny Foe']
]Browser
A build folder exists in keys-in-object under node_modules Include the keysInObject.js file into your html script tags
<!doctype html>
<html>
<head>
</head>
<body>
<script src="./path to file/keysInObject.js"></script>
<script>
var users = {
id_1: {
name: 'John Doe',
email: '[email protected]'
},
id_2: {
name: 'Hohn Moe',
email: '[email protected]'
},
id_3: {
name: 'Joon Doo',
email: '[email protected]'
},
id_4: {
user_info: {
name: 'Johnny Foe',
email: '[email protected]'
}
}
};
var arrayOfUserNames = keysInObject(users, 'name');
console.log(arrayOfUserNames)
</script>
</body>
</html>Additional feature
If you want to strip the unnecessary keys from the object and also to keep it's structure you can pass an optional Boolean Variable.
var userNames = keysInObject(users, 'name', true);
console.log(userNames)
/*
{
id_1: {
name: 'John Doe'
},
id_2: {
name: 'Hohn Moe'
},
id_3: {
name: 'Joon Doo'
},
id_4: {
user_info: {
name: 'Johnny Foe'
}
}
}
*/
// Or if you request for user_info
var userInfo = keysInObject(users, 'user_info', true);
console.log(userInfo)
/*
{
id_4:{
user_info: {
name: 'Johnny Foe',
email: '[email protected]'
}
}
}
*/Tests
Simply clone the repo, npm install, and run npm test