I'm getting "map is undefined", not sure why.
Am I passing a wrong variable, or is myMap wrongly declared?
var myMap = new Object();
$(things).each(function(){
var thing= this.attributes.things.Value;
alert("thing= " + thing);
var totalThings= myMap[thing];
alert("totalThings= " + totalThings);
});
Chances are myMap is defined, but myMap[thing] is not (since it's a virgin object with no properties). And since you're getting the value (and not setting it) you're getting an error.
// virgin object
var myObj = new Object();
console.log(JSON.stringify(myObj)); // "{}"
// therefore property "foo" doesn't exist
console.log(myObj['foo']); // undefined
// but if we add it:
myObj['foo'] = 'bar';
// now it exists
console.log(myObj['foo']); // "bar"
you can do something like this
function myMap( thing ){
// properties and defaults
this.thing = thing || 'default'
}
var myMapInstance = new myMap(whateverTheThingIs);
if thing is a string, may be you were trying to do:
myMap[things] = thing;
alert("totalThings = " + JSON.stringify(myMap, null, 4));
thingfield of an empty object:myMap[thing]myMaplooks OK apart from that you could have shortened the constructor invocation to a{}literalmapin that snippet.