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How to use JavaScript Object.defineProperty?
If you want to define a new or modify a property on an object, then use the Object.defineProperty in JavaScript. Use the property like the following −
Object.defineProperty(obj, prop, descriptor)
The following are the parameters −
- obj – Property is defined on this object.
- prop – Name of the property
- descriptor − The descriptor for the property
Example
You can try to run the following code to learn how to implement Object.defineProperty in JavaScript −
<!DOCTYPE html>
<html>
<body>
<script>
const obj = {};
Object.defineProperty(obj, 'prop', {
value: 20,
writable: false
});
obj.prop = 10;
document.write(obj.prop);
</script>
</body>
</html>
Updated on: 23-Jun-2020
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