I have an array of objects. The constructor is
Planet : function(planet)
{
this.name = planet.name;
this.percComp = planet.percComp;
this.preReq = planet.preReq;
}
Is there a way using jquery or underscore to get an object or objects, out of the array based on the objects parameter.
Something like
_getItem(planetArray, Planet.name === 'Mars')
try Underscore's where method
_.where(listOfPlanets, {name: "Mars"});
Say you have the following list of planets - prop is a made up property
var listOfPlanets = [
{ name: 'Mercury', prop:1},
{ name: 'Venus', prop:2},
{ name: 'Earth', prop:3},
{ name: 'Mars', prop:4},
{ name: 'Jupiter', prop:5},
{ name: 'Saturn', prop:6},
{ name: 'Uranus', prop:7},
{ name: 'Neptune', prop:8} ];
To get the Mars object just do the following. Keep in mind that _.where returns an array of matches. Accessing the index 0 or using _.first will be needed
var mars = _.where(listOfPlanets, {name: "Mars"})[0];
console.log(mars.prop); // 4
Underscore also has a _.find method, which can be used to retrieve only the first match
var mars = _.find(listOfPlanets, function(p){ return p.name === 'Mars' });
console.log(mars.prop); // 4
JSFiddle here: http://jsfiddle.net/jaimem/6bxnK/1/
This is what jQuery's grep method is for:
var theObject = $.grep(planetArray, function (el) {
return el.name === 'mars';
})[0];
Here's the fiddle: http://jsfiddle.net/g7syV/
