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<title>JavaScrip高级教程</title>
<strong>第四页：分割方法(splitting method)</strong>
<p>你可以使用split方法用限位器来分割一系列的名称，然后将其<br>
放在一个数组中．例如：</p>
<p>var my_friends =<br>
"trixie,moxie,sven,guido,hermes";<br>
<br>
var friend_array =<br>
my_friends.split(",");<br>
<br>
for (loop=0; loop < friend_array.length;<br>
loop++)<br>
<br>
{<br>
<br>
document.writeln(friend_array[loop] + " is my<br>
friend.<br>");<br>
<br>
}</p>
<p>这段代码将字符串my_friends分割成包含５个元素的数组．<br>
JavaScript可以为你自动建立一个数组，所以你无需使用<br>
new Array()．</p>
<p>将字符串分割成数组之后，我们使用了循环语句写出每一个<br>
名称．我们可以利用split方法简化前面所讲到的域名提取：</p>
<p>var the_url = prompt("What's the URL?","");<br>
<br>
var first_split = the_url.split("//");<br>
<br>
var without_resource = first_split[1];<br>
<br>
var second_split = without_resource.split("/");<br>
<br>
var domain = second_split[0];</p>
<p>这段代码简化了很多而且也更容易理解．我们来分析一些这段<br>
代码：</p>
<p>var the_url = prompt("What's the URL?",""); </p>
<p>提示用户输入一个URL，假设用户输入<br>
"http://www.webmonkey.com/javascript/index.html" ．<br>
var first_split = the_url.split("//"); <br>
将用户输入的字符串分割成两块：first_split[0]是"http:"，<br>
first_split[1]是<br>
"www.webmonkey.com/javascript/index.html." <br>
var without_resource = first_split[1]; <br>
提取出数组中的第２个元素，所以现在without_resource是<br>
"www.webmonkey.com/javascript/index.html." <br>
var second_split = without_resource.split("/"); <br>
将without_resource分割成３块：www.webmonkey.com,<br>
javascript, 和index.html．现在你可以看到split的用途了吧？<br>
var domain = second_split[0]; <br>
现在我们提取出新数组中的第１个元素就可得出域名．</p>
<p>接下来我们将学习相关数组的概念，然后我们就正式开始学习<br>
神奇的cookie．<a href="day2_5.html">>></a></p>
<p><font face="宋体" size="3" color="#000000"><strong>JavaScript高级教程</strong></font><font color="#FF0000" face="宋体" size="3"><br>
</font><font color="#FF0000">第一页</font> <a href="day2_1.html">Javascript高级教程-第2日</a><br>
<font color="#FF0000">第二页</font> <a href="day2_2.html">神奇的字符串处理</a><br>
<font color="#FF0000">第三页</font> <a href="day2_3.html">子字符串</a><br>
<font color="#FF0000">第四页</font> 分割方法(splitting method)<br>
<font color="#FF0000">第五页</font> <a href="day2_5.html">相关数组</a><br>
<font color="#FF0000">第六页</font> <a href="day2_6.html">相关数组的一个例子</a><br>
<font color="#FF0000">第七页</font> <a href="day2_7.html">介绍cookie</a><br>
<font color="#FF0000">第八页</font> <a href="day2_8.html">深入了解cookies</a><br>
<font color="#FF0000">第九页</font> <a href="day2_9.html">读取cookies</a><br>
<font color="#FF0000">第十页</font> <a href="day2_10.html">复杂的cookies读取</a><br>
<font color="#FF0000">第十一页</font> <a href="day2_11.html">读取和编写多重cookies</a><br>
<font color="#FF0000">第十二页</font> <a href="day2_12.html">再次深入了解cookies</a><br>
<font color="#FF0000">第十三页</font> <a href="day2_13.html">cookie路径和域</a></p>
<p><font size="3">[<a href="day1_1.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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