The ES5 Object method in javascript is used to find more methods to interact with the objects.
The ES5 Object method can do:
- prevents enumeration
- manipulation
- deletion
- prevent addition of new features
- getters and setters
Syntax:
Object.defineProperty(object, property, {value : value})
The following Meta Data value can be true or false:
- writable
- enumerable
- configurable
Example to get all properties:
<!DOCTYPE html>
<html>
<body>
<div style="background-color: green;">
<center>
<h2>Geeksforgeeks</h2>
<h3>The properties of the object are:</h3>
<h3 id="demo"></h3>
</center>
</div>
<script>
var person = {
name: "xyz",
address: "noida",
language: "hindi"
}
// Change Property
Object.defineProperty(person,
"language", { enumerable: false });
document.getElementById("demo").innerHTML
= Object.getOwnPropertyNames(person);
</script>
</body>
</html>
|
Example to get enumerable properties:
<!DOCTYPE html>
<html>
<body>
<div style="background-color: green;">
<center>
<h2>Geeksforgeeks</h2>
<h3>The properties of the object are:</h3>
<h3 id="demo"></h3>
</center>
</div>
<script type="text/javascript">
var person = {
name: "xyz",
address: "noida",
language: "hindi"
}
// Change Property
Object.defineProperty(person,
"language", { enumerable: false });
document.getElementById("demo")
.innerHTML = Object.keys(person);
</script>
</body>
</html>
|
Example to add a property:
<!DOCTYPE html>
<html>
<body>
<div style="background-color: green;">
<center>
<h2>Geeksforgeeks</h2>
<h3>
The mobno property is added and
the value of that property is:
</h3>
<h3 id="demo"></h3>
</center>
</div>
<script>
var person = {
name: "xyz",
address: "noida",
language: "hindi"
}
Object.defineProperty(person,
"mobno", { value: "979889xxxx" });
// Display Properties
document.getElementById("demo")
.innerHTML = person.mobno;
</script>
</body>
</html>
|
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Last Updated :
07 Jan, 2021
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