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<title><![CDATA[刘新修]]></title> 
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<title><![CDATA[JS字符串处理汇总]]></title> 
<author>刘新修 &lt;admin@yourname.com&gt;</author>
<category><![CDATA[H5/JS/CSS]]></category>
<pubDate>Thu, 05 Nov 2015 09:19:34 +0000</pubDate> 
<guid>http://liuxinxiu.com:80/JS_string/</guid> 
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	<div class="codeText"><div class="codeHead">JavaScript代码</div><ol start="1" class="dp-c"><li class="alt"><span><span class="comment">//1.substr</span><span>&nbsp;&nbsp;</span></span></li><li><span><span class="keyword">var</span><span>&nbsp;src=</span><span class="string">&quot;images/off_1.png&quot;</span><span>;&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="comment">//alert(src.substr(7,3));</span><span>&nbsp;&nbsp;</span></span></li><li><span><span class="comment">//输出：off</span><span>&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="comment">//2.substring</span><span>&nbsp;&nbsp;</span></span></li><li><span><span class="keyword">var</span><span>&nbsp;src=</span><span class="string">&quot;images/off_1.png&quot;</span><span>;&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="keyword">var</span><span>&nbsp;yyy=</span><span class="string">'data:image/png;base64,'</span><span>;&nbsp;&nbsp;</span></span></li><li><span><span class="comment">//alert(src.substring(7,10));</span><span>&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="comment">//alert(yyy.substring(11,14))</span><span>&nbsp;&nbsp;</span></span></li><li><span><span class="comment">//输出：off</span><span>&nbsp;&nbsp;</span></span></li><li class="alt"><span>&nbsp;&nbsp;</span></li><li><span><span class="comment">//3.indexOf</span><span>&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="keyword">var</span><span>&nbsp;src=</span><span class="string">&quot;images/off_1.png&quot;</span><span>;&nbsp;&nbsp;</span></span></li><li><span><span class="comment">//alert(src.indexOf('t'));</span><span>&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="comment">//alert(src.indexOf('i'));</span><span>&nbsp;&nbsp;</span></span></li><li><span><span class="comment">//alert(src.indexOf('g'));</span><span>&nbsp;&nbsp;</span></span></li><li class="alt"><span>&nbsp;&nbsp;</span></li><li><span><span class="comment">//4.split</span><span>&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="keyword">var</span><span>&nbsp;yyy=</span><span class="string">'data:image/png;base64,'</span><span>;&nbsp;&nbsp;</span></span></li><li><span>str=yyy.split(<span class="string">&quot;;&quot;</span><span>);&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="keyword">var</span><span>&nbsp;args=</span><span class="keyword">new</span><span>&nbsp;Array();&nbsp;&nbsp;</span></span></li><li><span>&nbsp;&nbsp;</span></li><li class="alt"><span><span class="comment">//alert(str)</span><span>&nbsp;&nbsp;</span></span></li><li><span><span class="comment">//alert(ss.length[0])</span><span>&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="comment">//alert(&quot;2:3:4:5&quot;.split(&quot;:&quot;))</span><span>&nbsp;&nbsp;</span></span></li><li><span>&nbsp;&nbsp;</span></li><li class="alt"><span><span class="comment">//5.Array--split&nbsp;实例</span><span>&nbsp;&nbsp;</span></span></li><li><span><span class="comment">/******************************************</span>&nbsp;</span></li><li class="alt"><span><span class="comment">JS分割字符串，Array--split&nbsp;实例</span>&nbsp;</span></li><li><span><span class="comment">*********************************************/</span><span>&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="keyword">var</span><span>&nbsp;argy=</span><span class="keyword">new</span><span>&nbsp;Array([</span><span class="string">'www'</span><span>],[</span><span class="string">'jb51'</span><span>],[</span><span class="string">'net'</span><span>]);&nbsp;&nbsp;</span></span></li><li><span><span class="keyword">var</span><span>&nbsp;strs=</span><span class="string">'data:image/png;base64,'</span><span>;&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="keyword">var</span><span>&nbsp;args=</span><span class="keyword">new</span><span>&nbsp;Array();&nbsp;</span><span class="comment">//定义一数组</span><span>&nbsp;&nbsp;</span></span></li><li><span>strs=strs.split(<span class="string">&quot;;&quot;</span><span>)&nbsp;</span><span class="comment">//数组=split分割后的数据</span><span>&nbsp;&nbsp;</span></span></li><li class="alt"><span><span class="keyword">var</span><span>&nbsp;string=strs[0].split(</span><span class="string">&quot;/&quot;</span><span>)&nbsp;&nbsp;</span></span></li><li><span>alert(string[1]);&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<span class="comment">//读取数据,输出png</span><span>&nbsp;&nbsp;</span></span></li></ol></div>
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<pubDate>Thu, 01 Jan 1970 00:00:00 +0000</pubDate> 
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