How do you add a key/value pair to a JavaScript object?
Question
How do you add a key/value pair to a JavaScript object?
Solution
Sure, here are the steps to add a key/value pair to a JavaScript object:
- First, you need to have an existing JavaScript object. If you don't have one, you can create it. Here is an example of an empty object:
let obj = {};
- To add a key/value pair to the object, you can use the dot notation or the bracket notation. Here is how you can do it:
Dot notation:
obj.key = 'value';
Bracket notation:
obj['key'] = 'value';
In both cases, 'key' is the name of the property you want to add to the object, and 'value' is the value of the property.
- Now, if you log the object, you will see the added property:
console.log(obj);
This will output: { key: 'value' }
Remember that the key name must be a string in the bracket notation. If you want to use a variable as a key, you have to use the bracket notation.
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