I'm new to using Lodash so I apologise if the question is trivial.
I have a string and I have to validate it against a collection.
var x = 'foo'
var myObject = {
one: 'bar',
two: 'foo',
three: 'wiz'
}
How do I compare the value of x
against the value of one
, two
and three
using Lodash (or plain JS if it's more convenient) to find if there's a match or not?
If you want to use Lodash
for this example, you can use includes
method:
_.includes(myObject, x)
Checks if value is in collection.
You can use Object.keys to get an object's keys and check if there is one or more keys in use by using Array.prototype.some :
var x = 'foo'
var myObject = {
one: 'bar',
two: 'foo',
three: 'wiz'
}
var hasAnyKeyThatMatchesx = Object.keys(myObject).some(function(k){ return myObject[k] === x });
You can loop the properties of an object with for ... in
( docs ):
var x = 'foo';
var myObject = {
one: 'bar',
two: 'foo',
three: 'wiz'
}
function containsValue(obj, value) {
for (var prop in myObject) {
if(x === myObject[prop]) {
return true;
}
}
return false;
}
console.log(containsValue(myObject, x));
This is just plain js.
find key by value _.findKey(myObject, (row) => row === x ) // returns "two"
just check if value exist: _.includes(myObject, x) // returns true
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