1. Question:What are adapters in ExtJs? 

    Answer


    The adapter is used to allow classes to work together when normally could not because of incompatible interfaces, by providing its interface to clients while using the original interface.


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  2. Question:What are vtypes in ExtJs? 

    Answer
    Complex type of validation is the vtype. This can be used to validate and restrict user input, and report back error message. Some of most common vtype are:
    
    1. email
    2. url
    3. alpha
    4. alphanum

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  3. Question:

    What is SimpleStore() function in Extjs?

     

    Answer


    This is a function of Ext.data class. It is use to store data in the variable formatting similar to tabular data. For example

              var genres=new Ext.data. SimpleStore ({

                       fields:[‘id’,’genre’],

                       data:[[‘1’,’Comedy’],[‘2’,’Drama’],[‘3’,’Action’]]

             });


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  4. Question:What is xtype in Extjs? 

    Answer
    An xtype is just a reference to a particular Ext form component. xtype that defines what type of a field it is. Here are examples of the some common xtypes that are available to us:
    
    1. textfield
    2. timefield
    3. numberfield
    4. datefield
    5. combo
    6. textarea

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  5. Question:What is CSV? 

    Answer


    A comma-separated values (CSV) file stores tabular data (numbers and text) in plain-text form. CSV is a simple file format that is widely supported by consumer, business, and scientific applications. It might be used to transfer information from a database program to a spreadsheet.


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  6. Question:Define XML? 

    Answer
    • XML stands for EXtensible Markup Language
    • XML is a markup language much like HTML
    • XML was designed to carry data, not to display data
    • XML tags are not predefined. You must define your own tags
    • XML is designed to be self-descriptive
    • XML is a W3C Recommendation

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  7. Question:List five data types in term of ExtJS? 

    Answer
    1. string
    2. Integer
    3. float
    4. boolean
    5. data

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  8. Question:What is store field type in ExtJS? 

    Answer

    store field type is a reference to a valid data store where our data lives. This field use to show data in combo box and grid panel that’s name is store.

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  9. Question:What is field type in ExtJS? 

    Answer

    Field type is used to configure the ExtJS object with name/value pair. Example of some common field types are, title, url, renderTo etc.

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  10. Question:What is region field type in ExtJS Viewport? 

    Answer

    Region field type is used to in ExtJS.ViewPort class for setting the regions: North, West, Center, East, and South.

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