How do I remove a property from a JavaScript object?

javascript javascript-objects
johnstok picture johnstok · Oct 16, 2008 · Viewed 2.3M times · Source

Say I create an object as follows:

let myObject = {
  "ircEvent": "PRIVMSG",
  "method": "newURI",
  "regex": "^http://.*"
};

What is the best way to remove the property regex to end up with new myObject as follows?

let myObject = {
  "ircEvent": "PRIVMSG",
  "method": "newURI"
};

Answer

nickf picture nickf · Oct 16, 2008

Like this:

delete myObject.regex;
// or,
delete myObject['regex'];
// or,
var prop = "regex";
delete myObject[prop];

Demo 

var myObject = {
    "ircEvent": "PRIVMSG",
    "method": "newURI",
    "regex": "^http://.*"
};
delete myObject.regex;

console.log(myObject);

For anyone interested in reading more about it, Stack Overflow user kangax has written an incredibly in-depth blog post about the delete statement on their blog, Understanding delete. It is highly recommended.

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