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Thread: "New" vs. Ext.Create?

  1. #1
    Sencha User
    Join Date
    Nov 2007
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    Default "New" vs. Ext.Create?

    I am currently porting a 3.4 app to 4.1 and have 100's of lines of code like

    var frmId = new Ext.form.field.Text({...});

    In Ext 4.x, these calls could be converted to:

    var frmId = Ext.create('Ext.form.field.Text',{...});

    I understand maybe the benefits of using Ext.define/Ext.create for application classes but why use Ext.create for Ext classes?

  2. #2
    Sencha - Sr Software Engineer mitchellsimoens's Avatar
    Join Date
    Mar 2007
    Gainesville, FL
    Vote Rating


    Ext.create will instantiate the class just like the new keyword will except it checks to see if the class has already been loaded. If not then it will load the file. Once it has made sure the class definition exists then it will create the instance.

    If you know the class is going to be loaded, using the new keyword is fine, I do it about 99% myself.
    Mitchell Simoens @LikelyMitch
    Sencha Inc, Senior Software Engineer
    Learn BBCode and use it! Checkout the CODE tag!

    Check out my GitHub, lots of nice things for Ext JS and Sencha Touch

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