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How to dynamically access value of a property in Javascript object? [duplicate]

This question already has an answer here:

I have following JS object:-

var attributes = {
entityData: {
Party: 12
},
entityType: "Party"
};


Now i want to fetch dynamically the Party property value something like below, how can i do this?

alert(attributes.entityData.{attributes.entityType});


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2 Answers
2

whenever you need to access dynamic property you have to use square bracket for accessing property .

Syntax: object[propery}

var attributes = {
entityData: {
Party: 12
},
entityType: "Party"
};

alert(attributes.entityData[attributes.entityType]);

alert(attributes.entityData[attributes.entityType]);


You want something like this perhaps:

var attributes = {
entityData: {
Party: 12
},
entityType: "Party"
};

alert(attributes.entityData[attributes['entityType']]);

Use square braces instead of curly braces.