JavaScript经典例题

<!-- --------------------------------------------------------------------- // // Copyright 2000 Microsoft Corporation. All Rights Reserved. // // File: calendar.htc // // Description: The calendar behavior provides an easy, declarative way // to add a standard calendar control to web pages and html // based applications. It provides a variety of properties // to customize the look and feel along with a strong set // events and functionality. // //-------------------------------------------------------------------- --> <script language="javascript"> //------------------------------------------------------------------------ // Attach to element events //------------------------------------------------------------------------ element.attachEvent("onselectstart", fnOnSelectStart) element.attachEvent("onclick", fnOnClick) element.attachEvent("onpropertychange", fnOnPropertyChange) element.attachEvent("onreadystatechange", fnOnReadyStateChange) //------------------------------------------------------------------------ // Create the arrays of days & months for different languages //------------------------------------------------------------------------ var gaMonthNames = new Array( new Array('Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'), new Array('January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December') ); var gaDayNames = new Array( new Array('S', 'M', 'T', 'W', 'T', 'F', 'S'), new Array('Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'), new Array('Sunday', 'Monday', 'Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday') ); var gaMonthDays = new Array( /* Jan */ 31, /* Feb */ 29, /* Mar */ 31, /* Apr */ 30, /* May */ 31, /* Jun */ 30, /* Jul */ 31, /* Aug */ 31, /* Sep */ 30, /* Oct */ 31, /* Nov */ 30, /* Dec */ 31 ) var StyleInfo = null // Style sheet with rules for this calendar var goStyle = new Object() // A hash of style sheet rules that apply to this calendar var gaDayCell = new Array() // an array of the table cells for days var goDayTitleRow = null // The table row containing days of the week var goYearSelect = null // The year select control var goMonthSelect = null // The month select control var goCurrentDayCell = null // The cell for the currently selected day var giStartDayIndex = 0 // The index in gaDayCell for the first day of the month var gbLoading = true // Flag for if the behavior is loading var giDay // day of the month (1 to 31) var giMonth // month of the year (1 to 12) var giYear // year (1900 to 2099) var giMonthLength = 1 // month length (0,1) var giDayLength = 1 // day length (0 to 2) var giFirstDay = 0 // first day of the week (0 to 6) var gsGridCellEffect = 'raised' // Grid cell effect var gsGridLinesColor = 'black' // Grid line color var gbShowDateSelectors = true // Show date selectors (0,1) var gbShowDays = true // Show the days of the week titles (0,1) var gbShowTitle = true // Show the title (0,1) var gbShowHorizontalGrid = true // Show the horizontal grid (0,1) var gbShowVerticalGrid = true // Show the vertical grid (0,1) var gbValueIsNull = false // There is no value selected (0,1) var gbReadOnly = false // The user can not interact with the control var giMinYear = 1900 // Minimum year (1 is the lowest possible value) var giMaxYear = 2099 // Maximum year // Load the property values defined on the element to replace defaults fnGetPropertyDefaults() // Create the style sheets needed for the calendar display fnCreateStyleSheets() // Insert the HTML elements needed for the calendar display fnCreateCalendarHTML() // Update the title with the month and year fnUpdateTitle() // Fill in the days of the week fnUpdateDayTitles() // Build the month select control fnBuildMonthSelect() // Build the year select control fnBuildYearSelect() // Fill in the cells with the days of the month and set style values fnFillInCells() // ********************************************************************** // PROPERTY GET/SET FUNCTIONS // ********************************************************************** //------------------------------------------------------------------------ // // Function: fnGetDay / fnPutDay // // Synopsis: The day property is used to set the day of the month. The // valid range is from 1 to the maximum day of the selected // month & year. If a number is given outside that range, it // is set to the closest valid value. Invalid input will cause // an exception. // // Arguments: The put method requires an integer value for the day // // Returns: The get method will return the selected day of the month // If the valueIsNull property is set, null is returned // // Notes: none // //------------------------------------------------------------------------ function fnGetDay() { return (gbValueIsNull) ? null : giDay } function fnPutDay(iDay) { if (gbLoading) return // return if the behavior is loading iDay = parseInt(iDay) if (isNaN(iDay)) throw 450 fnSetDate(iDay, giMonth, giYear) } //------------------------------------------------------------------------ // // Function: fnGetMonth / fnPutMonth // // Synopsis: The month property is used to set the month of the year. // The valid range is from 1 to 12. If a value is given // outside that range, it is set to the closest valid value. // Invalid input will cause an exception. // // Arguments: The put method requires an integer value for the month // // Returns: The get method will return the selected month value // If the valueIsNull property is set, null is returned // // Notes: Setting the year can cause the selected "day" value to be // reduced to the highest day in the selected month if needed. // //------------------------------------------------------------------------ function fnGetMonth() { return (gbValueIsNull) ? null : giMonth } function fnPutMonth(iMonth) { if (gbLoading) return // return if the behavior is loading iMonth = parseInt(iMonth) if (isNaN(iMonth)) throw 450 fnSetDate(giDay, iMonth, giYear) } //------------------------------------------------------------------------ // // Function: fnGetYear / fnPutYear // // Synopsis: The year property is used to set the current year. // The valid range is from minYear to maxYear. If a value is given // outside that range, it is set to the closest valid value. // Invalid input will cause an exception. // // Arguments: The put method requires an integer value for the year // // Returns: The get method will return the selected year value // If the valueIsNull property is set, null is returned. // // Notes: Setting the year can cause the selected "day" value to be // reduced to the highest day in the selected month if needed. // //------------------------------------------------------------------------ function fnGetYear() { return (gbValueIsNull) ? null : giYear } function fnPutYear(iYear) { if (gbLoading) return // return if the behavior is loading iYear = parseInt(iYear) if (isNaN(iYear)) throw 450 fnSetDate(giDay, giMonth, iYear) } //-------------------