Getting and matching values from array

Question

I have an array which is like this:

var Data=[{
    "Class":"item1","element":["a","b","c","d","e"],
    "Class":"item2","element":["a","b","c","d","e"],
    "Class":"item3","element":["a","b","c","d","e"],
    "Class":"item4","element":["a","b","c","d","e"]
}];

I have two variables:

var class='item1';
var element='a';

I want a condition that if var class values match "item1" then var element value should be matched with its elements only like:

if (class == Data.Class) then element should be matched with Data.element near it

Any ideas?

Your Data variable is wrong. How can you have same key/value pairs 4 times. Only the last one will be stored. — mohkhan
– mohkhan, Commented Jul 6, 2013 at 13:10
The object in your Data array redefines "Class" and "element". Did you mean for each line to be a separate object in the array? — freejosh
– freejosh, Commented Jul 6, 2013 at 13:10
yes freejosh and what should be best structure for it mohkhan — Hushme
– Hushme, Commented Jul 6, 2013 at 13:13
It should be like this var Data=[ { "Class":"item1", "element":["a","b","c","d","e"] }, { "Class":"item2", "element":["a","b","c","d","e"] }, { "Class":"item3", "element":["a","b","c","d","e"] }, { "Class":"item4", "element":["a","b","c","d","e"] } }]; — mohkhan
– mohkhan, Commented Jul 6, 2013 at 13:14

mohkhan · Accepted Answer · 2013-07-06 13:20:12Z

2

This should be your data...

var Data= [
    { "Class":"item1","element":["a","b","c","d","e"] },
    { "Class":"item2","element":["a","b","c","d","e"] },
    { "Class":"item3","element":["a","b","c","d","e"] },
    { "Class":"item4","element":["a","b","c","d","e"] },
];

Then you can iterate over it and find your value. Like this

var class='item1';
var element='a';
for(var i = 0; i < Data.length; ++i){
    if (Data[i].Class == class){
        for( var j = 0; j < Data[i].element.length; ++j){
            if ( Data[i].elements[j] == element){
               // do whatever
            }
        }
    }
}

answered Jul 6, 2013 at 13:20

mohkhan

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1 Comment

Hushme Over a year ago

Can you please check and tell me what is wrong with this its not accepting the data for same element jsfiddle.net/StaHg

1983 · Accepted Answer · 2013-07-06 13:18:02Z

0

First of all you need to fix your data

var Data= [
    { "Class":"item1","element":["a","b","c","d","e"] },
    { "Class":"item2","element":["a","b","c","d","e"] },
    { "Class":"item3","element":["a","b","c","d","e"] },
    { "Class":"item4","element":["a","b","c","d","e"] },
];

Now it is an array of objects.

Then you can look into that array, for example with a for loop

var myclass = "item3"; // class is a reserved word
for (var i=0; i<Data.length;i++) {
    if (Data[i].Class == myclass) {
        // do something with that its data Data[i].element
    }
}

edited Jul 6, 2013 at 13:18

1983

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answered Jul 6, 2013 at 13:14

Zim84

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1 Comment

Zim84 Over a year ago

well whatever you want to do now.. thats up to you. You didn't specify what you want with that.

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