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The principle and implementation of writing pure CSS pop-up menu By shawl.qiu_Experience exchange

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Release： 2016-05-16 12:08:46
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The principle and implementation of writing pure CSS pop-up menu By shawl.qiu


Abstract:
This article introduces the use of CSS to write multi-style pop-up menus suitable for Opera, Firefox, and IE
## #Description:
The key point of writing a CSS pop-up menu is to display the hidden label when the mouse moves over the target.
The label to be hidden is hidden using the display:none; attribute.
Trigger display Hidden tags mainly use the :hover attribute, and use display:block; to display hidden tags.

But because browsers do not support CSS consistently.
For Opera or Firefox, we can write a pure CSS menu , they support the :hover attribute of any tag.
For IE browser, :hover only works on the a tag, but we can use the script's onmouseover, onmouseout to simulate the :hover attribute of other tags.
Therefore Writing a CSS pop-up menu suitable for IE requires the use of a few scripts.

Directory:
1. Writing a CSS pop-up menu on the right side of the vertical row.
1.1 Really based on Opera, Firefox pure CSS Pop-up menu
1.2 Compatible with IE, Opera, Firefox CSS pop-up menu (script implementation)

2. Write a horizontal bottom pop-up CSS menu.
2.1 Real pure CSS pop-up based on Opera, Firefox Menu
2.2 Compatible with IE, Opera, Firefox CSS pop-up menu (script implementation)

3. Conclusion

4. Preview

shawl.qiu
2006 -10-01

http://blog.csdn.net/btbtd
1. Write a CSS menu that pops up on the right side of the vertical row.

1.1 True Based on Opera, Firefox pure CSS popup menu

    linenum "
  1. http://www.w3.org/TR/html4/loose.dtd">
  4. Untitled Document

  10.     
  11.         level
  •         
  •             level_ title
  •             level_ title 1
  •             level_ title 2
  •             level_ title 3
  •             level_ title 4
  •             level_ title 5
  •         
  •     
  •     
  •         level 1
  •         
  •             level_ title
  •             level_ title 1
  •             level_ title 2
  •             level_ title 3
  •             level_ title 4
  •             level_ title 5
  •         
  •     
  •     
  •         level 2
  •         
  •             level_ title
  •             level_ title 1
  •             level_ title 2
  •             level_ title 3
  •             level_ title 4
  •             level_ title 5
  •         
  •     
  •     
  •         level 3
  •         
  •             level_ title
  •             level_ title 1
  •             level_ title 2
  •             level_ title 3
  •             level_ title 4
  •             level_ title 5
  •         
  •     
  •     
  •         level 4
  •         
  •             level_ title
  •             level_ title 1
  •             level_ title 2
  •             level_ title 3
  •             level_ title 4
  •             level_ title 5
  •         
  •     

    • 1.2 兼容 IE, Opera, Firefox 的 CSS 弹出菜单(脚本实现)
      linenum
    1. " http://www.w3.org/TR/html4/loose.dtd">
    5. Untitled Document

    12.     
    13.         level
    14.         
    15.             level_ title
    16.             level_ title 1
    17.             level_ title 2
    18.             level_ title 3
    19.             level_ title 4
    20.             level_ title 5
    21.         
    22.     
    23.     
    24.         level 1
    25.         
    26.             level_ title
    27.             level_ title 1
    28.             level_ title 2
    29.             level_ title 3
    30.             level_ title 4
    31.             level_ title 5
    32.         
    33.     
    34.     
    35.         level 2
    36.         
    37.             level_ title
    38.             level_ title 1
    39.             level_ title 2
    40.             level_ title 3
    41.             level_ title 4
    42.             level_ title 5
    43.         
    44.     
    45.     
    46.         level 3
    47.         
    48.             level_ title
    49.             level_ title 1
    50.             level_ title 2
    51.             level_ title 3
    52.             level_ title 4
    53.             level_ title 5
    54.         
    55.     
    56.     
    57.         level 4
    58.         
    59.             level_ title
    60.             level_ title 1
    61.             level_ title 2
    62.             level_ title 3
    63.             level_ title 4
    64.             level_ title 5
    65.         
    66.     

    2. 编写横排底部弹出的 CSS 菜单. 

    2.1 真正的基于 Opera, Firefox 纯 CSS 弹出菜单
      linenum
    1. " http://www.w3.org/TR/html4/loose.dtd">
    5. Untitled Document
    7. /*    body{ margin:0px auto; width:768px; /* 定义页面居中显示,*/}
    8.     *{text-decoration:none!important; /* 定义所有链接不显示下划线 */}
    9.     .pmHorizontalBottomOut{background-color:#fff!important; /* 定义主菜单域背景色 */} 
    10.     .pmHorizontalBottomOut .level{  /* 定义一级类别属性 */
    11.         width:120px; /* 宽度 */
    12.         height:17; /* 高度 */
    13.         position:relative; /* 显示位置为相对位置 */
    14.         display:block; /* 以块模式显示 */
    15.         background-color:#D8D8D8; /* 背景色 */
    16.         padding:0px 2px; /* 文字内补丁间隔 */
    17.         margin:0px 1px 0px 0px; /* 菜单外补丁间隔 */
    18.         float:left;
    19.     }
    20. .pmHorizontalBottomOut .level:hover { /* When the mouse moves over the first-level menu */
    21. background-color:#6633FF; /* background color */
    22. color:#FFFFFF; /* text color */
    23. }
    24. .pmHorizontalBottomOut .level_{display:none; /* Second-level categories are hidden by default */}
    26. .pmHorizontalBottomOut .level:hover .level_ { /* Trigger the display of the secondary category when the mouse moves over it */
    27.        display:block; /* Display in blocks */
    28. width:124px; /* Width */
    29. height:auto; /* height */
    30. margin:0px -2px 0px -2px; /* External patch */
    31. background-color:#EFEFEF; /* Define background color */
    32. Position:absolute; /* Position is absolute position */
    33. }
    34. .pmHorizontalBottomOut .level:hover .level_ .level_title {
    35. /* Define the secondary category title style */
    36. font-weight:bold; /* Font bold */
    37. background-color:#A7ADFE; /* background color */
    38. color:white; /* text color */
    39. }
    40. .pmHorizontalBottomOut .level:hover .level_ a:hover {
    41. /* Define the display style of secondary category links */
    42. background-color:#F83658; /* background color */
    43. color:white; /* text color */
    44. }
    45. .pmHorizontalBottomOut .level_ * {
    46.                                                                                                /* Define the common attributes of all second-level categories */
    47.        display:block; /* Display in blocks */
    48. color:black; /* text color */
    49. padding:0px 2px; /* inner patch interval */
    50. }
    51. /*]]>*/

    57.     
    58.         
      level
    59.         
    60.             
      level_ title
    61.             level_ title 1
    62.             level_ title 2
    63.             level_ title 3
    64.             level_ title 4
    65.             level_ title 5
    66.         
    67.     
    68.     
    69.         
      level 1
    70.         
    71.             
      level_ title
    72.             level_ title 1
    73.             level_ title 2
    74.             level_ title 3
    75.             level_ title 4
    76.             level_ title 5
    77.         
    78.     
    79.     
    80.         
      level 2
    81.         
    82.             level_ title
    83.             level_ title 1
    84.             level_ title 2
    85.             level_ title 3
    86.             level_ title 4
    87.             level_ title 5
    88.         
    89.     
    90.     
    91.         level 3
    92.         
    93.             level_ title
    94.             level_ title 1
    95.             level_ title 2
    96.             level_ title 3
    97.             level_ title 4
    98.             level_ title 5
    99.         
    100.     
    101.     
    102.         level 4
    103.         
    104.             level_ title
    105.             level_ title 1
    106.             level_ title 2
    107.             level_ title 3
    108.             level_ title 4
    109.             level_ title 5
    110.         
    111.     

    2.2 兼容 IE, Opera, Firefox 的 CSS 弹出菜单(脚本实现)
      linenum
    1. " http://www.w3.org/TR/html4/loose.dtd">
    5. Untitled Document
    7. /*    body{ margin:0px auto; width:768px; /* 定义页面居中显示,*/}
    8.     *{text-decoration:none!important; /* 定义所有链接不显示下划线 */}
    9.     /* ------------------- start 针对 Opera, Firefox 的 CSS 弹出菜单 -------------------*/
    10.     .pmHorizontalBottomOut{background-color:#fff!important; /* 定义主菜单域背景色 */} 
    11.     .pmHorizontalBottomOut .level{  /* 定义一级类别属性 */
    12.         width:120px; /* 宽度 */
    13.         height:17; /* 高度 */
    14.         position:relative; /* 显示位置为相对位置 */
    15.         display:block; /* 以块模式显示 */
    16.         background-color:#D8D8D8; /* 背景色 */
    17.         padding:0px 2px; /* 文字内补丁间隔 */
    18.         margin:0px 1px 0px 0px; /* 菜单外补丁间隔 */
    19.         float:left;
    20.     }
    21. .pmHorizontalBottomOut .level:hover { /* When the mouse moves over the first-level menu */
    22. background-color:#6633FF; /* background color */
    23. color:#FFFFFF; /* text color */
    24. }
    25. .pmHorizontalBottomOut .level_{display:none; /* Second-level categories are hidden by default */}
    27. .pmHorizontalBottomOut .level:hover .level_ { /* Trigger the display of the secondary category when the mouse moves over it */
    28.        display:block; /* Display in blocks */
    29. width:124px; /* Width */
    30. height:auto; /* height */
    31. margin:0px -2px 0px -2px; /* External patch */
    32. background-color:#EFEFEF; /* Define background color */
    33. Position:absolute; /* Position is absolute position */
    34. }
    35. .pmHorizontalBottomOut .level:hover .level_ .level_title {
    36. /* Define the secondary category title style */
    37. font-weight:bold; /* Font bold */
    38. background-color:#A7ADFE; /* background color */
    39. color:white; /* text color */
    40. }
    41. .pmHorizontalBottomOut .level:hover .level_ a:hover {
    42. /* Define the display style of secondary category links */
    43. background-color:#F83658; /* background color */
    44. color:white; /* text color */
    45. }
    46. .pmHorizontalBottomOut .level_ * {
    47.                                                                                                /* Define the common attributes of all second-level categories */
    48.        display:block; /* Display in blocks */
    49. color:black; /* text color */
    50. padding:0px 2px; /* inner patch interval */
    51. }
    52. /* ------------------- end CSS pop-up menu for Opera, Firefox ------------------ --*/
    54. /* ------------------- start CSS pop-up menu for IE ------------------- */
    55. .levelIe{ /* Define first-level category attributes */
    56. width:120px; /* Width */
    57. Height:17; /* Height */
    58. Position:relative; /* Display position is relative position */
    59.        display:block; /* Display in block mode */
    60. background-color:#D8D8D8; /* background color */
    61. padding:0px 2px; /* patch interval within text */
    62. margin:0px 1px 0px 0px; /* Patch interval outside menu */
    63. float:left;
    64. }
    65. .levelIe { /* When the mouse moves over the first-level menu */
    66. background-color:#6633FF; /* background color */
    67. color:#FFFFFF; /* text color */
    68. }
    69. .levelIe .level_ { /* Trigger the display of secondary categories when the mouse moves over */
    70.        display:block; /* Display in blocks */
    71. width:124px; /* Width */
    72. height:auto; /* height */
    73. margin:0px -2px 0px -2px; /* External patch */
    74. background-color:#EFEFEF; /* Define background color */
    75. Position:absolute; /* Position is absolute position */
    76. }
    77. .levelIe .level_ .level_title {
    78. /* Define the secondary category title style */
    79. font-weight:bold; /* Font bold */
    80. background-color:#A7ADFE; /* background color */
    81. color:white; /* text color */
    82. }
    83. .levelIe .level_ a:hover {
    84. /* Define the display style of secondary category links */
    85. background-color:#F83658; /* background color */
    86. color:white; /* text color */
    87. }
    88. .levelIe .level_ * {
    89.                                                                                                /* Define the common attributes of all second-level categories */
    90.        display:block; /* Display in blocks */
    91. color:black; /* text color */
    92. padding:0px 2px; /* inner patch interval */
    93. }
    94. /* ------------------- end CSS pop-up menu for IE ------------------- */
    95. /*]]>*/

    102.     
    103.         level
    104.         
    105.             level_ title
    106.             level_ title 1
    107.             level_ title 2
    108.             level_ title 3
    109.             level_ title 4
    110.             level_ title 5
    111.         
    112.     
    113.     
    114.         level 1
    115.         
    116.             level_ title
    117.             level_ title 1
    118.             level_ title 2
    119.             level_ title 3
    120.             level_ title 4
    121.             level_ title 5
    122.         
    123.     
    124.     
    125.         level 2
    126.         
    127.             level_ title
    128.             level_ title 1
    129.             level_ title 2
    130.             level_ title 3
    131.             level_ title 4
    132.             level_ title 5
    133.         
    134.     
    135.     
    136.         level 3
    137.         
    138.             level_ title
    139.             level_ title 1
    140.             level_ title 2
    141.             level_ title 3
    142.             level_ title 4
    143.             level_ title 5
    144.         
    145.     
    146.     
    147.         level 4
    148.         
    149.             level_ title
    150.             level_ title 1
    151.             level_ title 2
    152.               level_ title 3
    153. level_ title 4
    154. level_ title 5


    3. Conclusion
    As can be seen from the above example, if a usable CSS pop-up menu example has been written, then the pop-up position must be written in other If you have local CSS pop-up menu, you only need to modify it slightly.

    4. Preview

    4.1 1.2 Preview of CSS pop-up menu (script implementation) compatible with IE, Opera, and Firefox# ##
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