The Javascript handler has() method hides the specified property.
Syntax:
has: function(target, property)
Parameters: target: It represents the target object. property: It represents the property to be hidden.
Return: Boolean.
Example:
<!DOCTYPE html>
<html>
<body>
<script>
var handler={x:10}
var display = new Proxy(handler, {
has: function(a,b) {
document.writeln(b);
return false;
}
});
document.writeln('Value:' in display);
</script>
</body>
</html>
