網頁設計外文翻譯-其他專業(編輯修改稿)

　

【文章內容簡介】 and onmouseout event handlers in a form of inline style. Visit the style section of the DHTML page of this web site to see an example of mouseovers used with text as an inline style. Any style property that applies to a particular object can be changed as the result of a mouseover. Performing mouseovers with a graphic is not much different than with text. When the desired event occurs (onmouseover, onmouseout) change the source of the graphic as in the example that follows: img src= onmouseover=src=39。39。 onmouseout=src=39。39。 SCROLLING TEXT Since the marquee tag is only supported by Inter Explorer it is a good idea to avoid it as much as possible and use a JavaScript to generate scrolling text instead. With this JavaScript it is also quite easy to place the scrolling text on the status bar instead of in the document itself by using as the destination for the message. The following function will generate a scrolling message in a text box named mymessagebox which is part of a form named myform. The event handler onload must also be used in the body tag to call the function when the page loads. var message = This is a test... var position = 0 function mymessage( ) { = (position, ) + (0, position) position = position + 1 if (position ) { position = 0 } (mymessage( ), 300) } DATES AND TIMES Dates and times are often displayed on web pages to indicate when a page was last updated, when a page was loaded, or to display a countdown to a particular event. Displaying 大連交通大學 2021 屆本科生畢業設計（論文）外文翻譯 6 the date and time of the last update is a good practice to get in to for all of your pages because frequent updates are one sign of a quality site. The date/time stamp lets the viewer know how recent the information is and therefore provides one indication of validity. To display the date and time of the last update (the last time the document was saved) use the following one line inside of script tags: (This page last updated + ) To display the current time and date on a web page you must declare a variable of type Date ( var now = new Date). The variable can then be used to access various parts of the date and time including day of the week, month, day of the month, year, hours (in military time), minutes, and seconds. Assuming that now is the variable declared of type Date the following table describes how to access the parts of the date and time. Each of the function calls may be used in a statement to display the result. Table13 various parts of the Date type variable Function Call Description ( ) Returns a number between 0 and 6 for the day of the week (Sunday is 0, Monday is 1,...) ( ) Returns a number between 0 and 11 for the month (January is 0, February is 1,...) ( ) Returns the number of the day in the month (1 31) ( ) Returns the four digit year ( ) Returns the number of hours on the clock (0 23) ( ) Returns the number of minutes on the clock (0 59) ( ) Returns the number of seconds on the clock (0 59) One way to convert the numbers for the month and day of week in to words is to use if statements. Using a lot of if statements is not the most efficient way to display the words, but it is the method that requires the least amount of programming knowledge. Examine the following example. Notice the condition that follows the word if is in parentheses and that a double equal sign is used for the parison. A single equal sign will actually make the condition true no matter what so January would always be displayed. if (( ) == 0) (January) The following function would display a working clock if your page contained a form 大連交通大學 2021 屆本科生畢業