JavaScript setPrototypeOf() method

The Javascript handler setPrototypeOf() method modifies the prototype of an object.

Syntax:

setPrototypeOf: function(target, prototype)

Parameters:
target: It represents the target object.
prototype: It represents the new prototype of object. It can be null.

Return:
Returns true if prototype of the object changed successfully otherwise returns false.

Example:

<!DOCTYPE html>
<html>
<body>
<script>  
var handler = { abc:45}  
var proto = new Proxy(handler, {  
setPrototypeOf(a,b) {  
return newProto in a;  
}  
});  
document.writeln('Value: ');  
document.writeln('abc' in proto);  
</script>  
</body>
</html>

Output:

Value: true
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