day2_6.html

不错的javascript学习资料适合于刚刚学习javascirpt的出学者

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          <title>javascrip教程</title>
          <strong><font face="宋体" size="3">第六页：if-then子句</font></strong> 
          <p><font face="宋体" size="3">&quot;if-then&quot;子句的应用可以使得程序根据用户输入的值作出不同<br>
            的反应。例如你可以写一段程序使得它对你与对其他人反应<br>
            不同。这里是它的基本格式：</font></p>
          <blockquote> 
            <pre><font face="宋体" size="3">
if (some condition is true)

{ 

    do something;

    do something;

    do something;	

}

</font></pre>
          </blockquote>
          <p><font face="宋体" size="3">本结构的重要部分:</font> 
          <ul>
            <li><font face="宋体" size="3">以单词 &quot;<tt>if</tt>&quot;开始 (<tt>if</tt> 
              必须小写). </font></li>
            <li><font face="宋体" size="3">圆括弧中是条件：非真即伪。</font></li>
            <li><font face="宋体" size="3">如果条件为真的话执行花括弧中的语句。</font></li>
          </ul>
          <p><font face="宋体" size="3">记住：空格是唯一保持程序可读性的东西。当然你可以将整<br>
            个if-then语句写在一行中，但它读起来就费劲了。</font></p>
          <p><font face="宋体" size="3">这里是一个<a href="day2_7.html">if-then子句的例子</a>。</font></p>
          <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 face="宋体" size="3"><font color="#FF0000">第一页</font>：<a href="day2_1.html">第二天课程简介</a><br>
            <font color="#FF0000">第二页</font>：<a href="day2_2.html">变量介绍</a><br>
            <font color="#FF0000">第三页</font>：<a href="day2_3.html">首个变量例子的程序主体</a><br>
            <font color="#FF0000">第四页</font>：<a href="day2_4.html">字符串的魔力<br>
            </a><font color="#FF0000">第五页</font>：<a href="day2_5.html">变量练习</a><a href="day2_4.html"> 
            </a></font><font face="宋体" size="3"><br>
            <font color="#FF0000">第</font><font face="宋体" size="3"><font color="#FF0000">六</font></font><font color="#FF0000">页</font>：if-then子句<br>
            <font color="#FF0000">第</font><font face="宋体" size="3"><font color="#FF0000">七</font></font><font color="#FF0000">页</font>：<a href="day2_7.html">if-then语句的例子</a> 
            <br>
            <font color="#FF0000">第八页</font>：<a href="day2_9.html">链结事件</a><br>
            <font color="#FF0000">第</font><font face="宋体" size="3"><font color="#FF0000">九</font></font><font color="#FF0000">页</font>：<a href="day2_10.html">图片交换</a><br>
            <font color="#FF0000">第十页</font>：<a href="day2_12.html">复习</a><br>
            </font></p>
          <p align="left"><font face="宋体" size="3">[<a href="index.html">第1课</a>][第2课][<a href="day3_1.html">第3课</a>][<a href="day4_1.html">第4课</a>][<a href="day5_1.html">第5课</a>]</font></p>
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