day4_11.html

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<title>javascrip教程</title>
 <strong><font face="宋体" size="3">第十一页：</font><font size="3">函数</font></strong> 
      <p align="JUSTIFY"><font size="2"></font><font size="3">函数是编程需学的最后一个基本组成。所有的程序语言都是<br>
        函数。函数是一些角次可调用的、无须重写的东西。</font></p>
      <font size="3"> 
      <p align="JUSTIFY">如果你想教会自己快速阅读并且用一个一旦点击可告诉你当前<br>
        时间的长文本链接。</p>
      <p align="JUSTIFY">例如…<a href="#" onClick="

	var the_date = new Date();

	var the_hour = the_date.getHours();

	var the_minute = the_date.getMinutes();

	var the_second = the_date.getSeconds();

	var the_time = the_hour + ':' + the_minute + ':' + the_second;

	alert('现在时间是: ' + the_time);">时间!</a></p>
      <p align="JUSTIFY">看源码：</p>
      </font> 
      <p align="JUSTIFY"><font face="宋体"><br>
        &lt;a href=&quot;#&quot; onClick=&quot;<br>
        <br>
        var the_date = new Date();<br>
        <br>
        var the_hour = the_date.getHours();<br>
        <br>
        var the_minute = the_date.getMinutes();<br>
        <br>
        var the_second = the_date.getSeconds();<br>
        <br>
        var the_time = the_hour + ':' + the_minute + ':' + the_second;<br>
        <br>
        alert('The time is now: ' + the_time);&quot;&gt;time!&lt;/a&gt;<br>
        <br>
        </font></p>
      <p align="JUSTIFY"><font size="3">在这里这段<font face="宋体">JavaScript</font>的工作细节并不重要；一会我们再回来<br>
        复习一下。</font></p>
      <font size="3"> 
      <p align="JUSTIFY"> <font size="2"></font>重要的是它太长了。若这些时间链接再有<font face="宋体">10</font>个，你须每次剪贴<br>
        这段程序。这使你的<font face="宋体">HTML</font>既长且难看。另外，若你想改变这段<br>
        程序，就必须在<font face="宋体">10</font>个不同地方改变。</p>
      <p align="JUSTIFY"> <font size="2"></font>你可以写一个函数来执行而不用作<font face="宋体">10</font>次拷贝程序。这里的函数<br>
        使用变的即容易编辑又容易阅读。</p>
      <p align="JUSTIFY"> <font size="2"></font>请看如何写一段<a href="day4_12.html">计时函数</a>。</p>
      </font> 
      <p align="left"><font face="宋体" size="3" color="#000000"><strong>JavaScript教程</strong></font><font color="#FF0000" face="宋体" size="3"><br>
        </font><font size="3" color="#FF0000">第一页</font><font size="2" face="宋体"> 
        </font><a href="day4_11.html"><font size="3">第四课介绍</font></a><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第二页</font> <a href="day4_2.html">循环介绍</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第三页</font> <a href="day4_3.html">循环的密码</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第四页</font> <a href="day4_4.html">再谈<font face="宋体">WHILE</font>循环</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第五页</font> <a href="day4_5.html">For循环</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第六页</font> <a href="day4_6.html">嵌套循环</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第七页</font> <a href="day4_7.html">循环练习</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第八页</font> <a href="day4_8.html">数组</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第九页</font> <a href="day4_9.html">数组和循环</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第十页</font> <a href="day4_10.html">文件目标模块中的数组</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第十一页</font> 函数</font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第十二页</font> <a href="day4_12.html">无参数函数</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第十三页</font> <a href="day4_13.html">参数及返回值</a></font><font size="2"><br>
        </font><font size="3"><font color="#FF0000">第十四页</font> <a href="day4_14.html">多于一个参数的函数</a></font></p>
      <p align="left"><font face="宋体" size="3">[<a href="index.html">第1课</a>][<a href="day2_1.html">第2课</a>][<a href="day3_1.html">第3课</a>][第4课][<a href="day5_1.html">第5课</a>]</font></p>
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