Ext.browser

Hierarchy

Files

Provides useful information about the current browser.

Example:

if (Ext.browser.is.IE) {
    // IE specific code here
}

if (Ext.browser.is.WebKit) {
    // WebKit specific code here
}

console.log("Version " + Ext.browser.version);

For a full list of supported values, refer to is property/method.

Properties

Defined By

Instance properties

The full name of the current browser's engine. ...

The full name of the current browser's engine. Possible values are:

  • WebKit
  • Gecko
  • Presto
  • Trident
  • Other

true if page is running over SSL.

true if page is running over SSL.

true if browser is using strict mode.

true if browser is using strict mode.

The full name of the current browser. ...

The full name of the current browser. Possible values are:

  • IE
  • Firefox
  • Safari
  • Chrome
  • Opera
  • Other
...

Defaults to: {WebKit: 'webkit', Gecko: 'moz', Trident: 'ms', Presto: 'o', Other: ''}

Get the reference to the current class from which this object was instantiated. ...

Get the reference to the current class from which this object was instantiated. Unlike statics, this.self is scope-dependent and it's meant to be used for dynamic inheritance. See statics for a detailed comparison

Ext.define('My.Cat', {
    statics: {
        speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
    },

    constructor: function() {
        alert(this.self.speciesName); // dependent on 'this'
    },

    clone: function() {
        return new this.self();
    }
});


Ext.define('My.SnowLeopard', {
    extend: 'My.Cat',
    statics: {
        speciesName: 'Snow Leopard'         // My.SnowLeopard.speciesName = 'Snow Leopard'
    }
});

var cat = new My.Cat();                     // alerts 'Cat'
var snowLeopard = new My.SnowLeopard();     // alerts 'Snow Leopard'

var clone = snowLeopard.clone();
alert(Ext.getClassName(clone));             // alerts 'My.SnowLeopard'
...

Defaults to: {WebKit: '-webkit-', Gecko: '-moz-', Trident: '-ms-', Presto: '-o-', Other: ''}

...

Defaults to: {WebKit: 'Webkit', Gecko: 'Moz', Trident: 'ms', Presto: 'O', Other: ''}

Browser User Agent string.

Browser User Agent string.

Defined By

Static properties

...

Defaults to: []

Methods

Defined By

Instance methods

...

Parameters

Returns

Fires

    Call the original method that was previously overridden with override, This method is deprecated as callParent does ...

    Call the original method that was previously overridden with override,

    This method is deprecated as callParent does the same thing.

    Ext.define('My.Cat', {
        constructor: function() {
            alert("I'm a cat!");
        }
    });
    
    My.Cat.override({
        constructor: function() {
            alert("I'm going to be a cat!");
    
            var instance = this.callOverridden();
    
            alert("Meeeeoooowwww");
    
            return instance;
        }
    });
    
    var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                              // alerts "I'm a cat!"
                              // alerts "Meeeeoooowwww"
    

    Parameters

    • args : Array/Arguments

      The arguments, either an array or the arguments object from the current method, for example: this.callOverridden(arguments)

    Returns

    • Object

      Returns the result of calling the overridden method

    Call the "parent" method of the current method. ...

    Call the "parent" method of the current method. That is the method previously overridden by derivation or by an override (see Ext.define).

     Ext.define('My.Base', {
         constructor: function (x) {
             this.x = x;
         },
    
         statics: {
             method: function (x) {
                 return x;
             }
         }
     });
    
     Ext.define('My.Derived', {
         extend: 'My.Base',
    
         constructor: function () {
             this.callParent([21]);
         }
     });
    
     var obj = new My.Derived();
    
     alert(obj.x);  // alerts 21
    

    This can be used with an override as follows:

     Ext.define('My.DerivedOverride', {
         override: 'My.Derived',
    
         constructor: function (x) {
             this.callParent([x*2]); // calls original My.Derived constructor
         }
     });
    
     var obj = new My.Derived();
    
     alert(obj.x);  // now alerts 42
    

    This also works with static methods.

     Ext.define('My.Derived2', {
         extend: 'My.Base',
    
         statics: {
             method: function (x) {
                 return this.callParent([x*2]); // calls My.Base.method
             }
         }
     });
    
     alert(My.Base.method(10));     // alerts 10
     alert(My.Derived2.method(10)); // alerts 20
    

    Lastly, it also works with overridden static methods.

     Ext.define('My.Derived2Override', {
         override: 'My.Derived2',
    
         statics: {
             method: function (x) {
                 return this.callParent([x*2]); // calls My.Derived2.method
             }
         }
     });
    
     alert(My.Derived2.method(10)); // now alerts 40
    

    To override a method and replace it and also call the superclass method, use callSuper. This is often done to patch a method to fix a bug.

    Parameters

    • args : Array/Arguments

      The arguments, either an array or the arguments object from the current method, for example: this.callParent(arguments)

    Returns

    • Object

      Returns the result of calling the parent method

    This method is used by an override to call the superclass method but bypass any overridden method. ...

    This method is used by an override to call the superclass method but bypass any overridden method. This is often done to "patch" a method that contains a bug but for whatever reason cannot be fixed directly.

    Consider:

     Ext.define('Ext.some.Class', {
         method: function () {
             console.log('Good');
         }
     });
    
     Ext.define('Ext.some.DerivedClass', {
         method: function () {
             console.log('Bad');
    
             // ... logic but with a bug ...
    
             this.callParent();
         }
     });
    

    To patch the bug in DerivedClass.method, the typical solution is to create an override:

     Ext.define('App.paches.DerivedClass', {
         override: 'Ext.some.DerivedClass',
    
         method: function () {
             console.log('Fixed');
    
             // ... logic but with bug fixed ...
    
             this.callSuper();
         }
     });
    

    The patch method cannot use callParent to call the superclass method since that would call the overridden method containing the bug. In other words, the above patch would only produce "Fixed" then "Good" in the console log, whereas, using callParent would produce "Fixed" then "Bad" then "Good".

    Parameters

    • args : Array/Arguments

      The arguments, either an array or the arguments object from the current method, for example: this.callSuper(arguments)

    Returns

    • Object

      Returns the result of calling the superclass method

    ...

    Parameters

    Returns the initial configuration passed to constructor. ...

    Returns the initial configuration passed to constructor.

    Parameters

    • name : String (optional)

      When supplied, value for particular configuration option is returned, otherwise the full config object is returned.

    Returns

    ...

    Parameters

    ...

    Parameters

    ...

    Parameters

    ( instanceConfig ) : Objectchainableprotected
    Initialize configuration for this class. ...

    Initialize configuration for this class. a typical example:

    Ext.define('My.awesome.Class', {
        // The default config
        config: {
            name: 'Awesome',
            isAwesome: true
        },
    
        constructor: function(config) {
            this.initConfig(config);
        }
    });
    
    var awesome = new My.awesome.Class({
        name: 'Super Awesome'
    });
    
    alert(awesome.getName()); // 'Super Awesome'
    

    Parameters

    Returns

    • Object

      mixins The mixin prototypes as key - value pairs

    Fires

      A "hybrid" property, can be either accessed as a method call, for example: if (Ext.browser.is('IE')) { // ... ...

      A "hybrid" property, can be either accessed as a method call, for example:

      if (Ext.browser.is('IE')) {
          // ...
      }
      

      Or as an object with Boolean properties, for example:

      if (Ext.browser.is.IE) {
          // ...
      }
      

      Versions can be conveniently checked as well. For example:

      if (Ext.browser.is.IE6) {
          // Equivalent to (Ext.browser.is.IE && Ext.browser.version.equals(6))
      }
      

      Note: Only major component and simplified value of the version are available via direct property checking.

      Supported values are:

      • IE
      • Firefox
      • Safari
      • Chrome
      • Opera
      • WebKit
      • Gecko
      • Presto
      • Trident
      • WebView
      • Other

      Parameters

      • value : String

        The OS name to check.

      Returns

      ( names, callback, scope )private
      ...

      Parameters

      ( config, applyIfNotSet ) : Ext.Basechainableprivate
      ...

      Parameters

      Returns

      ( name, value ) : Ext.env.Browserchainableprivate
      ...

      Parameters

      Returns

      Get the reference to the class from which this object was instantiated. ...

      Get the reference to the class from which this object was instantiated. Note that unlike self, this.statics() is scope-independent and it always returns the class from which it was called, regardless of what this points to during run-time

      Ext.define('My.Cat', {
          statics: {
              totalCreated: 0,
              speciesName: 'Cat' // My.Cat.speciesName = 'Cat'
          },
      
          constructor: function() {
              var statics = this.statics();
      
              alert(statics.speciesName);     // always equals to 'Cat' no matter what 'this' refers to
                                              // equivalent to: My.Cat.speciesName
      
              alert(this.self.speciesName);   // dependent on 'this'
      
              statics.totalCreated++;
          },
      
          clone: function() {
              var cloned = new this.self();                    // dependent on 'this'
      
              cloned.groupName = this.statics().speciesName;   // equivalent to: My.Cat.speciesName
      
              return cloned;
          }
      });
      
      
      Ext.define('My.SnowLeopard', {
          extend: 'My.Cat',
      
          statics: {
              speciesName: 'Snow Leopard'     // My.SnowLeopard.speciesName = 'Snow Leopard'
          },
      
          constructor: function() {
              this.callParent();
          }
      });
      
      var cat = new My.Cat();                 // alerts 'Cat', then alerts 'Cat'
      
      var snowLeopard = new My.SnowLeopard(); // alerts 'Cat', then alerts 'Snow Leopard'
      
      var clone = snowLeopard.clone();
      alert(Ext.getClassName(clone));         // alerts 'My.SnowLeopard'
      alert(clone.groupName);                 // alerts 'Cat'
      
      alert(My.Cat.totalCreated);             // alerts 3
      

      Returns

      Defined By

      Static methods

      ( config, fullMerge )privatestatic
      ...

      Parameters

      ( members )chainableprivatestatic
      ...

      Parameters

      ( name, member )chainableprivatestatic
      ...

      Parameters

      ( members )chainablestatic
      Add methods / properties to the prototype of this class. ...

      Add methods / properties to the prototype of this class.

      Ext.define('My.awesome.Cat', {
          constructor: function() {
              // ...
          }
      });
      
       My.awesome.Cat.addMembers({
           meow: function() {
              alert('Meowww...');
           }
       });
      
       var kitty = new My.awesome.Cat();
       kitty.meow();
      

      Parameters

      ( members ) : Ext.Basechainablestatic
      Add / override static properties of this class. ...

      Add / override static properties of this class.

      Ext.define('My.cool.Class', {
          // this.se
      });
      
      My.cool.Class.addStatics({
          someProperty: 'someValue',      // My.cool.Class.someProperty = 'someValue'
          method1: function() {  },    // My.cool.Class.method1 = function() { ... };
          method2: function() {  }     // My.cool.Class.method2 = function() { ... };
      });
      

      Parameters

      Returns

      ( xtype )chainableprivatestatic
      ...

      Parameters

      ( fromClass, members ) : Ext.Basechainableprivatestatic
      Borrow another class' members to the prototype of this class. ...

      Borrow another class' members to the prototype of this class.

      Ext.define('Bank', {
          money: '$$$',
          printMoney: function() {
              alert('$$$$$$$');
          }
      });
      
      Ext.define('Thief', {
          // ...
      });
      
      Thief.borrow(Bank, ['money', 'printMoney']);
      
      var steve = new Thief();
      
      alert(steve.money); // alerts '$$$'
      steve.printMoney(); // alerts '$$$$$$$'
      

      Parameters

      • fromClass : Ext.Base

        The class to borrow members from

      • members : Array/String

        The names of the members to borrow

      Returns

      ( args )protectedstatic
      ...

      Parameters

      Create a new instance of this Class. ...

      Create a new instance of this Class.

      Ext.define('My.cool.Class', {
          // ...
      });
      
      My.cool.Class.create({
          someConfig: true
      });
      

      All parameters are passed to the constructor of the class.

      Returns

      ( alias, origin )static
      Create aliases for existing prototype methods. ...

      Create aliases for existing prototype methods. Example:

      Ext.define('My.cool.Class', {
          method1: function() {  },
          method2: function() {  }
      });
      
      var test = new My.cool.Class();
      
      My.cool.Class.createAlias({
          method3: 'method1',
          method4: 'method2'
      });
      
      test.method3(); // test.method1()
      
      My.cool.Class.createAlias('method5', 'method3');
      
      test.method5(); // test.method3() -> test.method1()
      

      Parameters

      ( parent )privatestatic
      ...

      Parameters

      Get the current class' name in string format. ...

      Get the current class' name in string format.

      Ext.define('My.cool.Class', {
          constructor: function() {
              alert(this.self.getName()); // alerts 'My.cool.Class'
          }
      });
      
      My.cool.Class.getName(); // 'My.cool.Class'
      

      Returns

      ...
      ( name, mixinClass )privatestatic
      Used internally by the mixins pre-processor ...

      Used internally by the mixins pre-processor

      Parameters

      ( fn, scope )chainableprivatestatic
      ...

      Parameters

      ( members ) : Ext.Basechainabledeprecatedstatic
      Override members of this class. ...

      Override members of this class. Overridden methods can be invoked via callParent.

      Ext.define('My.Cat', {
          constructor: function() {
              alert("I'm a cat!");
          }
      });
      
      My.Cat.override({
          constructor: function() {
              alert("I'm going to be a cat!");
      
              var instance = this.callParent(arguments);
      
              alert("Meeeeoooowwww");
      
              return instance;
          }
      });
      
      var kitty = new My.Cat(); // alerts "I'm going to be a cat!"
                                // alerts "I'm a cat!"
                                // alerts "Meeeeoooowwww"
      

      As of 2.1, direct use of this method is deprecated. Use Ext.define instead:

      Ext.define('My.CatOverride', {
          override: 'My.Cat',
      
          constructor: function() {
              alert("I'm going to be a cat!");
      
              var instance = this.callParent(arguments);
      
              alert("Meeeeoooowwww");
      
              return instance;
          }
      });
      

      The above accomplishes the same result but can be managed by the Ext.Loader which can properly order the override and its target class and the build process can determine whether the override is needed based on the required state of the target class (My.Cat).

      This method has been deprecated since 2.1.0

      Please use Ext.define instead

      Parameters

      • members : Object

        The properties to add to this class. This should be specified as an object literal containing one or more properties.

      Returns