How to create object properties from a JS string

Question

I have the following object

reportData: {}

and the following loop :

    for (var key in ABC.PrintReport.keyList) {
        console.log(ABC.PrintReport.keyList[key].Report_Key);
    }

This loop will print out :

objProperty0
objProperty1
objProperty2
objProperty3

I want to create properties for the object reportData that are named after each ABC.PrintReport.keyList[key].Report_Key.

reportData.objProperty0
reportData.objProperty1
reportData.objProperty2
reportData.objProperty3

Can you not use bracket notation, like you do with keyList and key? So reportData[objProperty0] = 'something';. — ajp15243
– ajp15243, Commented Mar 18, 2014 at 12:59

mbcrute · Accepted Answer · 2014-03-18 13:01:51Z

2

You can use square brackets to create properties on objects in JavaScript:

for (var key in ABC.PrintReport.keyList) {
    var k = ABC.PrintReport.keyList[key].Report_Key;
    reportData[k] = 'some value';
}

answered Mar 18, 2014 at 13:01

mbcrute

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Comments

Jian Huang · Accepted Answer · 2014-03-18 13:05:37Z

1

for (var key in ABC.PrintReport.keyList) {
    reportData[ABC.PrintReport.keyList[key].Report_Key] = ABC.PrintReport.keyList[key].Report_Key;
}

answered Mar 18, 2014 at 13:05

Jian Huang

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Comments

net.uk.sweet · Accepted Answer · 2014-03-18 13:06:55Z

1

Something like this should do it (see docs on bracket notation for object property access):

var reportData = {};
for (var key in ABC.PrintReport.keyList) {
    key = ABC.PrintReport.keyList[key].Report_Key;
    reportData[key] = 'some value';
}

edited Mar 18, 2014 at 13:06

answered Mar 18, 2014 at 13:01

net.uk.sweet

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1 Comment

hermann Over a year ago

This answer is just as good as the one I accepted. The only reason I didn't pick this one is because you overwrite key and it can no longer be used as an index.

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