PHP开发

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1. //—————————————————

2. //
   判断闰年

3. //—————————————————

4. Date.prototype.isLeapYear
   =
   function()

5. {

6. return
   (0==this.getYear()%4&&((this.getYear()%100!=0)||(this.getYear()%400==0)));

7. }

9. //—————————————————

10. //
    日期格式化

11. //
    格式
    YYYY/yyyy/YY/yy
    表示年份

12. //
    MM/M
    月份

13. //
    W/w
    星期

14. //
    dd/DD/d/D
    日期

15. //
    hh/HH/h/H
    时间

16. //
    mm/m
    分钟

17. //
    ss/SS/s/S
    秒

18. //—————————————————

19. Date.prototype.Format
    =
    function(formatStr)

20. {

21. var
    str
    =
    formatStr;

22. var
    Week
    =
    ['日','一','二','三','四','五','六'];

24. str=str.replace(/yyyy|YYYY/,this.getFullYear());

25. str=str.replace(/yy|YY/,(this.getYear()
    %
    100)>9?(this.getYear()
    %
    100).toString():’0′
    +
    (this.getYear()
    %
    100));

27. str=str.replace(/MM/,this.getMonth()>9?this.getMonth().toString():’0′
    +
    this.getMonth());

28. str=str.replace(/M/g,this.getMonth());

30. str=str.replace(/w|W/g,Week[this.getDay()]);

32. str=str.replace(/dd|DD/,this.getDate()>9?this.getDate().toString():’0′
    +
    this.getDate());

33. str=str.replace(/d|D/g,this.getDate());

35. str=str.replace(/hh|HH/,this.getHours()>9?this.getHours().toString():’0′
    +
    this.getHours());

36. str=str.replace(/h|H/g,this.getHours());

37. str=str.replace(/mm/,this.getMinutes()>9?this.getMinutes().toString():’0′
    +
    this.getMinutes());

38. str=str.replace(/m/g,this.getMinutes());

40. str=str.replace(/ss|SS/,this.getSeconds()>9?this.getSeconds().toString():’0′
    +
    this.getSeconds());

41. str=str.replace(/s|S/g,this.getSeconds());

43. return
    str;

44. }

46. //+—————————————————

47. //|
    求两个时间的天数差
    日期格式为
    YYYY-MM-dd
    

48. //+—————————————————

49. function
    daysBetween(DateOne,DateTwo)

50. {

51. var
    OneMonth
    =
    DateOne.substring(5,DateOne.lastIndexOf
    (‘-’));

52. var
    OneDay
    =
    DateOne.substring(DateOne.length,DateOne.lastIndexOf
    (‘-’)+1);

53. var
    OneYear
    =
    DateOne.substring(0,DateOne.indexOf
    (‘-’));

55. var
    TwoMonth
    =
    DateTwo.substring(5,DateTwo.lastIndexOf
    (‘-’));

56. var
    TwoDay
    =
    DateTwo.substring(DateTwo.length,DateTwo.lastIndexOf
    (‘-’)+1);

57. var
    TwoYear
    =
    DateTwo.substring(0,DateTwo.indexOf
    (‘-’));

59. var
    cha=((Date.parse(OneMonth+’/'+OneDay+’/'+OneYear)-
    Date.parse(TwoMonth+’/'+TwoDay+’/'+TwoYear))/86400000);

60. return
    Math.abs(cha);

61. }

64. //+—————————————————

65. //|
    日期计算

66. //+—————————————————

67. Date.prototype.DateAdd
    =
    function(strInterval,
    Number)
    {

68. var
    dtTmp
    =
    this;

69. switch
    (strInterval)
    {

70. case
    ’s’
    :return
    new
    Date(Date.parse(dtTmp)
    +
    (1000
    *
    Number));

71. case
    ‘n’
    :return
    new
    Date(Date.parse(dtTmp)
    +
    (60000
    *
    Number));

72. case
    ‘h’
    :return
    new
    Date(Date.parse(dtTmp)
    +
    (3600000
    *
    Number));

73. case
    ‘d’
    :return
    new
    Date(Date.parse(dtTmp)
    +
    (86400000
    *
    Number));

74. case
    ‘w’
    :return
    new
    Date(Date.parse(dtTmp)
    +
    ((86400000
    *
    7)
    *
    Number));

75. case
    ‘q’
    :return
    new
    Date(dtTmp.getFullYear(),
    (dtTmp.getMonth())
    +
    Number*3,
    dtTmp.getDate(),
    dtTmp.getHours(),
    dtTmp.getMinutes(),
    dtTmp.getSeconds());

76. case
    ‘m’
    :return
    new
    Date(dtTmp.getFullYear(),
    (dtTmp.getMonth())
    +
    Number,
    dtTmp.getDate(),
    dtTmp.getHours(),
    dtTmp.getMinutes(),
    dtTmp.getSeconds());

77. case
    ‘y’
    :return
    new
    Date((dtTmp.getFullYear()
    +
    Number),
    dtTmp.getMonth(),
    dtTmp.getDate(),
    dtTmp.getHours(),
    dtTmp.getMinutes(),
    dtTmp.getSeconds());

78. }

79. }

81. //+—————————————————

82. //|
    比较日期差
    dtEnd
    格式为日期型或者
    有效日期格式字符串

83. //+—————————————————

84. Date.prototype.DateDiff
    =
    function(strInterval,
    dtEnd)
    {

85. var
    dtStart
    =
    this;

86. if
    (typeof
    dtEnd
    ==
    ’string’
    )//如果是字符串转换为日期型

87. {

88. dtEnd
    =
    StringToDate(dtEnd);

89. }

90. switch
    (strInterval)
    {

91. case
    ’s’
    :return
    parseInt((dtEnd
    -
    dtStart)
    /
    1000);

92. case
    ‘n’
    :return
    parseInt((dtEnd
    -
    dtStart)
    /
    60000);

93. case
    ‘h’
    :return
    parseInt((dtEnd
    -
    dtStart)
    /
    3600000);

94. case
    ‘d’
    :return
    parseInt((dtEnd
    -
    dtStart)
    /
    86400000);

95. case
    ‘w’
    :return
    parseInt((dtEnd
    -
    dtStart)
    /
    (86400000
    *
    7));

96. case
    ‘m’
    :return
    (dtEnd.getMonth()+1)+((dtEnd.getFullYear()-dtStart.getFullYear())*12)
    -
    (dtStart.getMonth()+1);

97. case
    ‘y’
    :return
    dtEnd.getFullYear()
    -
    dtStart.getFullYear();

98. }

99. }

101. //+—————————————————

102. //|
     日期输出字符串，重载了系统的toString方法

103. //+—————————————————

104. Date.prototype.toString
     =
     function(showWeek)

105. {

106. var
     myDate=
     this;

107. var
     str
     =
     myDate.toLocaleDateString();

108. if
     (showWeek)

109. {

110. var
     Week
     =
     ['日','一','二','三','四','五','六'];

111. str
     +=
     ‘
     星期’
     +
     Week[myDate.getDay()];

112. }

113. return
     str;

114. }

116. //+—————————————————

117. //|
     日期合法性验证

118. //|
     格式为：YYYY-MM-DD或YYYY/MM/DD

119. //+—————————————————

120. function
     IsValidDate(DateStr)

121. {

122. var
     sDate=DateStr.replace(/(^\\s+|\\s+$)/g,”);
     //去两边空格;
     

123. if(sDate==”)
     return
     true;

124. //如果格式满足YYYY-(/)MM-(/)DD或YYYY-(/)M-(/)DD或YYYY-(/)M-(/)D或YYYY-(/)MM-(/)D就替换为”
     

125. //数据库中，合法日期可以是:YYYY-MM/DD(2003-3/21),数据库会自动转换为YYYY-MM-DD格式
     

126. var
     s
     =
     sDate.replace(/[\\d]{
     4,4
     }[\\-/]{
     1
     }[\\d]{
     1,2
     }[\\-/]{
     1
     }[\\d]{
     1,2
     }/g,”);

127. if
     (s==”)
     //说明格式满足YYYY-MM-DD或YYYY-M-DD或YYYY-M-D或YYYY-MM-D
     

128. {

129. var
     t=new
     Date(sDate.replace(/\\-/g,’/'));

130. var
     ar
     =
     sDate.split(/[-/:]/);

131. if(ar[0]
     !=
     t.getYear()
     ||
     ar[1]
     !=
     t.getMonth()+1
     ||
     ar[2]
     !=
     t.getDate())

132. {

133. //alert(‘错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。’);
     

134. return
     false;

135. }

136. }

137. else

138. {

139. //alert(‘错误的日期格式！格式为：YYYY-MM-DD或YYYY/MM/DD。注意闰年。’);
     

140. return
     false;

141. }

142. return
     true;

143. }

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