Deleting nested property in javascript object

Question

I have a JS object like this:

var tenants = {     'first': {         'name': 'first',         'expired': 1     },     'second': {         'name': 'second'     } } 

And I'd like to delete the 'expired' property of tenant 'first', should I just do this?

delete tenants['first']['expired']; 

Note: this question is more specific than the question: How do I remove a property from a JavaScript object?, in that my question focuses on the 'nested' part.

Answer 1

Yes. That would work.

delete tenants['first']['expired']; or delete tenants.first.expired;.

If you are deleting it only because you wanted to exclude it from JSON.stringify(), you can also just set it to undefined, like tenants['first']['expired'] = undefined;

Answer 2

If the property you want to delete is stored in a string, you can use this function

function deletePropertyPath (obj, path) {    if (!obj || !path) {     return;   }    if (typeof path === 'string') {     path = path.split('.');   }    for (var i = 0; i < path.length - 1; i++) {      obj = obj[path[i]];      if (typeof obj === 'undefined') {       return;     }   }    delete obj[path.pop()]; }; 

Example Usage

var tenants = {     'first': {         'name': 'first',         'expired': 1     },     'second': {         'name': 'second'     } }  var property = 'first.expired';     deletePropertyPath(tenants, property);