checking if javascript array contains value using underscorejs

arrays, javascript, underscore.js

Solution

Your code does work (once you fix the syntax errors in the object array): http://jsfiddle.net/ArPCa/

var cars = [{ name:"Toyota Minivan", id:"506"}, { name:"Honda Civic", id:"619"}];
var x =!!_.where(cars, {id:'506'}).length;
console.log('value: ' + x);

returns "value: true". So there must be a problem somewhere else.

But, a better way to do this might be `some`:

var y = _.some(cars, function(c) {
    return c.id == '506'; 
});

Problem

I have an array of cars like this: ``` [{ name:"Toyota Minivan", id:"506" }, { name:"Honda Civic", id:"619" }] ``` I am trying to check whether the array contains a certain id. I have tried ``` var x =!!_.where(cars, {id:'506'}).length; ``` expecting it to return true if the array contains the id, but it always returns false. What am I doing here ? Btw, I don't have to use underscore.js if there is a better way of doing this. thanks Thomas

Original source