how to create object tree from string in java script

Question

Hi In javascript I have to create object tree from a string as below

"group1:node1:properties,group1:node2:properties,group2:node2:properties,group2:node3:properties,group2:node1:properties,group3:node2:properties".

In this, properties are also : seperated,

I require object tree as below

group1
   node1
     properties
   node2
     properties
group2
   node2
     properties
   node3
     properties
   node1
     properties
group3
   node2
     properties

can any body tell me what is the best way to do that with example.

I need to create object from which I can access on basis of group — agarwal_achhnera
– agarwal_achhnera, Commented Oct 30, 2013 at 12:32

Bas Slagter · Accepted Answer · 2022-04-29 13:23:56Z

4

Although it seems like a school exercise...I think you need to take a look at the split() method. First split on the comma (,), then the colon (:). For example..

Look at this: http://jsfiddle.net/T852c/

var str = 'group1:node1:properties,group1:node2:properties,group2:node2:properties,group2:node3:properties,group2:node1:properties,group3:node2:properties';

var result ={},
    groups = str.split(','),
    groupsCount = groups.length; 

for(var i=groupsCount; i--;){
    var groupStr = groups[i],
        split = groupStr.split(':'),
        groupKey = split[0],
        nodeKey = split[1],
        properties = split[2],
        group = result[groupKey] || (result[groupKey] = {}),
        node = group[nodeKey] || (group[nodeKey] = {});
    
    node[properties] = { foo: 'bar' };    
}

console.log(result);

It might not be exactly what you are looking for but it might help to get you started. Good luck!

edited Apr 29, 2022 at 13:23

answered Oct 30, 2013 at 12:31

Bas Slagter

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1 Comment

DannyThunder Over a year ago

And when you splitted them, append to the array.

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