string ActionScript 3 .replace() 只替换第一个实例
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ActionScript 3 .replace() only replaces first instance
提问by Craig
In Flash ActionScript 3, I am trying to do something I thought was simple: replace all instances of a phrase in a text string with another phrase. However, for some reason only the first instance is replaced and the rest ignored. I hacked a solution together by running it through the string replace function around 9 times so the end result has all the <br />replaced but I'd like to know what I've done wrong. Thanks in advance!
在 Flash ActionScript 3 中，我试图做一些我认为很简单的事情：用另一个短语替换文本字符串中一个短语的所有实例。但是，由于某种原因，只有第一个实例被替换，其余的被忽略。我通过大约 9 次通过字符串替换函数运行它来一起破解一个解决方案，因此最终结果已全部<br />替换，但我想知道我做错了什么。提前致谢！
My Code:
我的代码：
var importPostAddress = "123 Fake Street<br />Mytown<br />Mycounty<br />Mycountry<br />PO5 7CD<br /><br />";
var postAddress = importPostAddress.replace("<br />",", ");
Expected result when tracing postAddress:
跟踪时的预期结果postAddress：
123 Fake Street, Mytown, Mycounty, Mycountry, PO5 7CD, ,
Actual result:
实际结果：
123 Fake Street, Mytown<br />Mycounty<br />Mycountry<br />PO5 7CD<br /><br />
回答by Sam DeHaan
In order to fix this, you need to do juuuust a little bit more work.
为了解决这个问题，你需要做更多的工作。
var importPostAddress = "123 Fake Street<br />Mytown<br />Mycounty<br />Mycountry<br />PO5 7CD<br /><br />";
var pattern:RegExp = /<br \/>/g;
var postAddress = importPostAddress.replace(pattern,", ");
I'm using a RegExpin order to pass the /gflag, which makes the replacement global(replace all instances of the expression found). I also had to escape the /in <br />using a backslash \, as its a control character in regular expressions.
我正在使用 aRegExp来传递/g标志，这使替换成为全局（替换找到的表达式的所有实例）。我还必须使用反斜杠转义/in ，因为它是正则表达式中的控制字符。<br />\
回答by ToddBFisher
Sam has a good solution, another one is:
Sam有一个很好的解决方案，另一个是：
postAddress = importPostAddress.split("<br />").join(",");
