js如何获得全局变量的值
0
悬赏园豆：5
[已关闭问题]
<pre><span style="color: #000000;">
</span><span style="color: #000000;"><!</span><span style="color: #000000;">DOCTYPE html PUBLIC </span><span style="color: #000000;">"</span><span style="color: #000000;">-//W3C//DTD XHTML 1.0 Transitional//EN</span><span style="color: #000000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">"</span><span style="color: #000000;">http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd</span><span style="color: #000000;">"</span><span style="color: #000000;">></span><span style="color: #000000;">
</span><span style="color: #000000;"><</span><span style="color: #000000;">html xmlns</span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">http://www.w3.org/1999/xhtml</span><span style="color: #000000;">"</span><span style="color: #000000;">></span><span style="color: #000000;">
</span><span style="color: #000000;"><</span><span style="color: #000000;">head</span><span style="color: #000000;">></span><span style="color: #000000;">
</span><span style="color: #000000;"><</span><span style="color: #000000;">meta http</span><span style="color: #000000;">-</span><span style="color: #000000;">equiv</span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">Content-Type</span><span style="color: #000000;">"</span><span style="color: #000000;"> content</span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">text/html; charset=gb2312</span><span style="color: #000000;">"</span><span style="color: #000000;"> </span><span style="color: #000000;">/</span><span style="color: #000000;">></span><span style="color: #000000;">
</span><span style="color: #000000;"><</span><span style="color: #000000;">title</span><span style="color: #000000;">></span><span style="color: #000000;">无标题文档</span><span style="color: #000000;"><</span><span style="color: #000000;">/</span><span style="color: #000000;">title></span><span style="color: #000000;">
</span><span style="color: #000000;"><</span><span style="color: #000000;">script type</span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">text/javascript</span><span style="color: #000000;">"</span><span style="color: #000000;">></span><span style="color: #000000;">
</span><span style="color: #0000ff;">var</span><span style="color: #000000;"> ddd;
</span><span style="color: #0000ff;">function</span><span style="color: #000000;"> see(num)
{
ddd</span><span style="color: #000000;">=</span><span style="color: #000000;">num;
}
alert(ddd);
</span><span style="color: #000000;"><</span><span style="color: #000000;">/</span><span style="color: #000000;">script></span><span style="color: #000000;">
</span><span style="color: #000000;"><</span><span style="color: #000000;">/</span><span style="color: #000000;">head></span><span style="color: #000000;">
</span><span style="color: #000000;">
</span><span style="color: #000000;"><</span><span style="color: #000000;">body</span><span style="color: #000000;">></span><span style="color: #000000;">
</span><span style="color: #000000;"><</span><span style="color: #000000;">a href</span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">#</span><span style="color: #000000;">"</span><span style="color: #000000;"> onclick</span><span style="color: #000000;">=</span><span style="color: #000000;">"</span><span style="color: #000000;">see(num)</span><span style="color: #000000;">"</span><span style="color: #000000;">></span><span style="color: #000000;">看一下效果</span><span style="color: #000000;"><</span><span style="color: #000000;">/</span><span style="color: #000000;">a></span><span style="color: #000000;">
</span><span style="color: #000000;"><</span><span style="color: #000000;">/</span><span style="color: #000000;">body></span><span style="color: #000000;">
</span><span style="color: #000000;"><</span><span style="color: #000000;">/</span><span style="color: #000000;">html></span><span style="color: #000000;">
</span></pre>
其他回答(2)
0
你的写法没有错啊，有什么疑问呢？
0
num,是个局部变量，肯定要报错的，而且你这个方法里，连个alert都没有，能知道ddd吗
0
onclick="see(num)" 这肯定会报错的，不知道楼主想做什么
