blocks|key|3717569|text|有两种方法，我可以想到：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|3717570|3717571|使用RegExp和.replace()如下所示：|ordered-list-item|offset|length|3717572|3717573|var+ch:String+=+"a"；//必须检查的字符var+text:String+=+"This+is+a+example+to+show多少次‘“%2Bch%2B”“。”；//匹配非文本字符var+regexp:RegExp+=ch+RegExp("%5E"%2Bch%2B""，"g")；//用空字符串替换非ch字符var+text.replace:Number=.length(regexp，"").length；trace(text，"：“，timesOccured+)；|style|CODE|3717574|使用RegExp和.match()如下所示：|unordered-list-item|3717575|3717576|var+ch:String+=+"a"；//必须检查的字符var+text:String+=+"This+is+a+example+to+show多少次‘“%2Bch%2B”“。”；//匹配新字符var+regexp:RegExp+=+ch+RegExp(ch，"g")；var+matches+:text.match=+text.match(regexp)；var+matches：text.match=+0；//matches可以是'null'，所以我们正在执行额外的检查if(+Matches+){+timesOccured+=+matches.length；}+trace(text，"：“，timesOccured+);|3717577|现在有了timesOccured，就可以轻松地进行验证了：|3717578|if(+timesOccured+>+6+){
+++//Do+some+stuff
}else{
+++//Do+other+stuff
}++++|code-block|syntax|javascript|3717579|警告：如果您的ch是正则表达式的特殊字符，如.、%2B、(、]、\等，则在将其传递给regexp变量之前，需要对其进行转义：|BOLD|3717580|ch+=+ch.replace(new+RegExp("[.*%2B?%7C()\\[\\]{}\\\\]",+"g"),+"\\$&");|3717581|entityMap|0|LINK|mutability|MUTABLE|url|http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/RegExp.html?filter_flash=cs5&filter_flashplayer=10.2&filter_air=2.6|1|http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/String.html#replace%2528%2529|2|http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/String.html#replace%2528%2529|3|http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/String.html#match%2528%2529^0|0|0|2|6|0|9|A|1|0|0|37|2|46|2|0|2|6|2|9|8|3|0|0|36|2|50|7|5O|7|0|4|C|0|0|0|3|7|2|M|1|O|1|Q|1|S|1|U|1|14|6|0|0^^$0|@$1|2|3|4|5|6|7|1I|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|1J|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|1K|8|@]|9|@$F|1L|G|1M|1|1N]|$F|1O|G|1P|1|1Q]]|A|$]]|$1|H|3|-4|5|6|7|1R|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|1S|8|@$F|1T|G|1U|K|L]|$F|1V|G|1W|K|L]]|9|@]|A|$]]|$1|M|3|N|5|O|7|1X|8|@]|9|@$F|1Y|G|1Z|1|20]|$F|21|G|22|1|23]]|A|$]]|$1|P|3|-4|5|6|7|24|8|@]|9|@]|A|$]]|$1|Q|3|R|5|6|7|25|8|@$F|26|G|27|K|L]|$F|28|G|29|K|L]|$F|2A|G|2B|K|L]]|9|@]|A|$]]|$1|S|3|T|5|6|7|2C|8|@$F|2D|G|2E|K|L]]|9|@]|A|$]]|$1|U|3|V|5|W|7|2F|8|@]|9|@]|A|$X|Y]]|$1|Z|3|10|5|6|7|2G|8|@$F|2H|G|2I|K|11]|$F|2J|G|2K|K|L]|$F|2L|G|2M|K|L]|$F|2N|G|2O|K|L]|$F|2P|G|2Q|K|L]|$F|2R|G|2S|K|L]|$F|2T|G|2U|K|L]|$F|2V|G|2W|K|L]]|9|@]|A|$]]|$1|12|3|13|5|W|7|2X|8|@]|9|@]|A|$X|Y]]|$1|14|3|-4|5|6|7|2Y|8|@]|9|@]|A|$]]]|15|$16|$5|17|18|19|A|$1A|1B]]|1C|$5|17|18|19|A|$1A|1D]]|1E|$5|17|18|19|A|$1A|1F]]|1G|$5|17|18|19|A|$1A|1H]]]]

There are 2 ways, I can think of:

<ol>
<li>Use <a href="http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/RegExp.html?filter_flash=cs5&amp;filter_flashplayer=10.2&amp;filter_air=2.6" rel="nofollow">RegExp</a> and <a href="http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/String.html#replace%28%29" rel="nofollow">.replace()</a> like this:

<pre><code>var ch:String = "a"; //Character, that must be checked
var text:String = "This is an example to show how many times '"+ch+"' occured.";
//Matches non-`ch` characters
var regexp:RegExp = new RegExp("[^"+ch+"]","g"); 
//Replacing non-`ch` characters with empty string
var timesOccured:Number = text.replace(regexp,"").length; 
trace(text, ": " ,timesOccured );
</code></pre></li>
<li>Use <a href="http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/String.html#replace%28%29" rel="nofollow">RegExp</a> and <a href="http://help.adobe.com/en_US/FlashPlatform/reference/actionscript/3/String.html#match%28%29" rel="nofollow">.match()</a> like this:

<pre><code>var ch:String = "a"; //Character, that must be checked
var text:String = "This is an example to show how many times '"+ch+"' occured.";
//Matches `ch` characters
var regexp:RegExp = new RegExp(ch,"g");
var matches:Array = text.match(regexp);
var timesOccured:Number = 0;
//`matches` can be 'null', so we are performing additional check
if( matches ){ 
 timesOccured = matches.length;
}
trace(text, ": " ,timesOccured );
</code></pre></li>
</ol>

Now when you have <code>timesOccured</code>, you could easily do your validation:

<pre><code>if( timesOccured &gt; 6 ){
 //Do some stuff
}else{
 //Do other stuff
} 
</code></pre>

Warning: If your <code>ch</code> is a special character for Regular Expression, like a <code>.</code>,<code>+</code>,<code>(</code>,<code>]</code>,<code>\</code>,etc..., you need to escape it, before passing it to <code>regexp</code> variable:

<pre><code>ch = ch.replace(new RegExp("[.*+?|()\\[\\]{}\\\\]", "g"), "\\$&amp;");
</code></pre>

blocks|key|5446066|text|正则表达式的一种更简单的替代方法可以是：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|5446067|var+str:String+=+"This+is+an+example+to+show+how+many...";
//find+occurrences+for+character+'a'

trace("Ocurrences:"+%2B+str.split('a').length-1);|code-block|syntax|javascript|5446068|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

a simpler alternative to regular expressions can be the following:

<pre><code>var str:String = "This is an example to show how many...";
//find occurrences for character 'a'

trace("Ocurrences:" + str.split('a').length-1);
</code></pre>

I want to implement an alogorithm/validation. How can I find out if a string contains a specific character more than 6 times in Flex ?

How I find that string contain a character more then 6 time in Flex?

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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我想实现一个算法/验证。如何在Flex中找出一个字符串包含的特定字符是否超过6次？

问我如何在Flex中找到包含一个字符超过6次字符串？
EN

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问我如何在Flex中找到包含一个字符超过6次字符串？EN