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EXT 2.0 combos User Guide

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Author: User
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This is a simple example. You just need to explain it in a step-by-step manner, from simple to complex!

The example consists of two parts: lcombo.html and lcombo. js.

Lcombo.html

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  1. <! Doctype HTML public
    "-// W3C // dtd html 4.01 transitional // en"

  2. Http://www.w3.org/TR/html4/loose.dtd"
    >
  3. <HTML>
  4. <Head>
  5. <Meta http-equiv = "Content-Type"
    Content =
    "Text/html; charset = UTF-8"
    >
  6. <LINK rel = "stylesheet"
    Type =
    "Text/CSS"
    Href =
    "../Extjs-2.0/resources/CSS/ext-all.css"
    >
  7. <SCRIPT type = "text/JavaScript"
    Src =
    "../Extjs-2.0/adapter/EXT/ext-base.js"
    > </SCRIPT>
  8. <SCRIPT type = "text/JavaScript"
    Src =
    "../Extjs-2.0/ext-all-debug.js"
    > </SCRIPT>
  9. <SCRIPT type = "text/JavaScript"
    Src =
    "Lcombo. js"
    > </SCRIPT>
  10. <! -- A localization script file comes here -->
  11. <SCRIPT type = "text/JavaScript"
    >
  12. Ext. onready (lcombo. App. init, lcombo. app );
  13. </SCRIPT>
  14. <Title> linked combos example </title>
  15. </Head>
  16. <Body>
  17. </Body>
  18. </Html>
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"     "http://www.w3.org/TR/html4/loose.dtd">

This is ext's smallest HTML!
Do not forget to change the ext class library and resource references to deploy your ext!


Lcombo. js
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  1. /**
     
    2. 
 
  
  2. * Ext 2.0 linked combos tutorial
     
    3. 
 
  
  3. * By Jozef sakalos, aka Saki
     
    4. 
 
  
  4. * Extjs.com/learn/tutorial:linked_combos_tutorial_for_ext_2
     
    5. 
 
  
  5. */

    6. 
 
  
  6. 
 
  
  7. // Reference local blank image

    8. 
 
  
  8. Ext. blank_image_url = '../extjs-2.0/resources/images/default/s.gif'
    ;
    9. 
 
  
  9. 
 
  
  10. Ext. namespace ('lcombo'
    ,
    'Lcombo. Countries'
    ,
    'Lcombo. Cities'
    );
    11. 
 
  
  11. 
 
  
  12. Lcombo. Countries = [
    13. 
 
  
  13. ['Usa'
    ,
    'United States of America'
    ]
    14. 
 
  
  14. , ['D'
    ,
    'Germany'
    ]
    15. 
 
  
  15. , ['F'
    ,
    'France'
    ]
    16. 
 
  
  16. , ['Gb'
    ,
    'Great Britain'
    ]
    17. 
 
  
  17. ];
    18. 
 
  
  18. 
 
  
  19. Lcombo. Cities = [
    20. 
 
  
  20. [1, 'usa'
    ,
    'New York'
    ]
    21. 
 
  
  21. , [2, 'usa'
    ,
    'Cleveland'
    ]
    22. 
 
  
  22. , [3, 'usa'
    ,
    'Austin'
    ]
    23. 
 
  
  23. , [4, 'usa'
    ,
    'Los Angeles'
    ]
    24. 
 
  
  24. , [5, 'D'
    ,
    'Berline'
    ]
    25. 
 
  
  25. , [6, 'D'
    ,
    'Bonn'
    ]
    26. 
 
  
  26. , [7, 'F'
    ,
    'Paris'
    ]
    27. 
 
  
  27. , [8, 'F'
    ,
    'Nice'
    ]
    28. 
 
  
  28. , [9, 'gb'
    ,
    'London'
    ]
    29. 
 
  
  29. , [10, 'gb'
    ,
    'Glasgow'
    ]
    30. 
 
  
  30. , [11, 'gb'
    ,
    'Verpool'
    ]
    31. 
 
  
  31. ];
    32. 
 
  
  32. 
 
  
  33. // Create Application

    34. 
 
  
  34. Lcombo. APP = Function
    (){
    35. 
 
  
  35. // Do not access DOM from here; elements don't exist yet

    36. 
 
  
  36. 
 
  
  37. // Private Variables

    38. 
 
  
  38. 
 
  
  39. // Private Functions

    40. 
 
  
  40. 
 
  
  41. // Public Space

    42. 
 
  
  42. Return
    {
    43. 
 
  
  43. 
 
  
  44. // Public methods

    45. 
 
  
  45. Init: Function
    (){
    46. 
 
  
  46. VaR
    Form =
    New
    Ext. formpanel ({
    47. 
 
  
  47. Renderto: Document. Body
    48. 
 
  
  48. , Width: 400
    49. 
 
  
  49. , Height: 300
    50. 
 
  
  50. , Style: 'margin: 16px'

    51. 
 
  
  51. , Bodystyle: 'padding: 10px'

    52. 
 
  
  52. , Title: 'linked combos'

    53. 
 
  
  53. , Defaults: {xtype: 'combo'
    }
    54. 
 
  
  54. , Items :[{
    55. 
 
  
  55. Fieldlabel: 'select country'

    56. 
 
  
  56. , Displayfield: 'country'

    57. 
 
  
  57. , Valuefield: 'cid'

    58. 
 
  
  58. , Store: New
    Ext. Data. simplestore ({
    59. 
 
  
  59. Fields: ['cid'
    ,
    'Country'
    ]
    60. 
 
  
  60. , Data: lcombo. Countries
    61. 
 
  
  61. })
    62. 
 
  
  62. , Triggeraction: 'all'

    63. 
 
  
  63. , Mode: 'local'

    64. 
 
  
  64. , Listeners: {select: {fn: Function
    (Combo, value ){
    65. 
 
  
  65. VaR
    Combocity = ext. getcmp (
    'Combo-City'
    );
    66. 
 
  
  66. Combocity. setvalue (''
    );
    67. 
 
  
  67. Combocity. Store. Filter ('cid'
    , Combo. getvalue ());
    68. 
 
  
  68. }}
    69. 
 
  
  69. }
    70. 
 
  
  70. 
 
  
  71. },{
    72. 
 
  
  72. Fieldlabel: 'select City'

    73. 
 
  
  73. , Displayfield: 'city'

    74. 
 
  
  74. , Valuefield: 'id'

    75. 
 
  
  75. , ID: 'combo-City'

    76. 
 
  
  76. , Store: New
    Ext. Data. simplestore ({
    77. 
 
  
  77. Fields: ['id'
    ,
    'Cid'
    ,
    'City'
    ]
    78. 
 
  
  78. , Data: lcombo. Cities
    79. 
 
  
  79. })
    80. 
 
  
  80. , Triggeraction: 'all'

    81. 
 
  
  81. , Mode: 'local'

    82. 
 
  
  82. , Lastquery :''

    83. 
 
  
  83. }]
    84. 
 
  
  84. });
    85. 
 
  
  85. }
    86. 
 
  
  86. };
    87. 
 
  
  87. } (); // End of app

    88. 
 
  
  88. 
 
  
  89. // End of File


    90.

This article is an English version of an article which is originally in the Chinese language on aliyun.com and is provided for information purposes only. This website makes no representation or warranty of any kind, either expressed or implied, as to the accuracy, completeness ownership or reliability of the article or any translations thereof. If you have any concerns or complaints relating to the article, please send an email, providing a detailed description of the concern or complaint, to info-contact@alibabacloud.com. A staff member will contact you within 5 working days. Once verified, infringing content will be removed immediately.

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