JavaScript handler deleteProperty() Method

by Online Tutorials Library July 22, 2022

JavaScript handler.deleteProperty() Method

The handler.deleteProperty() method used to remove the property entirely using the delete operator. This method returns true if the delete was successful.

Syntax

Parameters

Target: The target object.

Property: The name of the property to delete.

Return value

This method returns a Boolean value. It indicates that property successfully deletes or not.

Browser Support

Chrome	49
Edge	12
Firefox	18
Opera	36

Example 1

  var proxy = new Proxy({}, {    deleteProperty: function(target, prop) {      document.writeln(“Called: ” + prop);      return true;      //if sucessfullt delete,return true.    }  });delete proxy.abc;  

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Output:

Called: abc

Example 2

  var proxy = new Proxy({}, {    deleteProperty: function(target, name) {      document.write(‘In delete Property  ‘);         return delete target[name];    }  });  delete proxy.foo;  document.writeln(proxy.name);  

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Output:

In delete Property undefined

Example 3

  var f = { bar: ‘baz’ }  f.bar = ‘baz’  document.writeln(‘bar’ in f)    delete f.bar  document.writeln(‘bar’ in f)    var foo = { bar: ‘baz’ }  foo.bar = ‘baz’  document.writeln(‘bar’ in foo)  

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Output:

true false true

Next TopicJavaScript handler

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JavaScript handler deleteProperty() Method

JavaScript handler.deleteProperty() Method

Syntax

Parameters

Return value

Browser Support

Example 1

Example 2

Example 3

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