JavaScript handler get() Method

by Online Tutorials Library July 22, 2022

JavaScript handler.get() Method

The handler.get method is a trap for getting a property value. This method takes 3 arguments.

Syntax

Parameters

Target: The target object.

Property: Name of the property to get.

Receiver: The proxy or an object that inherits from the proxy.

Return value

This method can return any value.

Browser Support

Chrome	49
Edge	12
Firefox	18
Opera	36

Example 1

  var data = {     “a”: 11,”b”: 21 }  var get = new Proxy(    data ,  {    get: function(y, idx) {           return y[idx] * 2           document.writeln(“<br>“);      }      }  )    for(var z in get) {    document.write(z +”:”)   document.write(get[z])  }  

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Output:

a:22b:42

Example 2

  var x = { f: 45, g:23 };  var proxy = new Proxy(x, {    get: function(target, name, proxy) {      document.write(‘In get’);             var value = target[name];      if (typeof value === ‘string’) {        value = value.toUpperCase();      }      return value;    }  });  document.write (proxy.f);  document.write (x.g);  

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Output:

In get4523

Example 3

  const r = {}  const  p = new Proxy(r, {    get: function(target, property, receiver) {     document.write(‘called: ‘ + property);      return 100;    }  });  document.write(p. a);  

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Output:

called: a100

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JavaScript handler get() Method

JavaScript handler.get() Method

Syntax

Parameters

Return value

Browser Support

Example 1

Example 2

Example 3

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