flash as的ExternalInterface.call()实现有bug,对象互转不完全

如简单的尝试ExternalInterface.call('alert',?{d:''}),就会导致js出错,

有人专门做了个尝试

http://mihai.bazon.net/blog/externalinterface-is-unreliable

"ExternalInterface?is?unreliable"

简单的解决方案是使用下面的方式互相转换,之前我使用过escape与unescape

The?solutionBeware,?this?is?very?ugly.?:-)??The?solution?is?to?take?the?problem?in?our?own?hands?and?therefore?encode?dangerous?characters?ourselves,?before?sending?them?to?JS.??I?determined?the?following?characters?to?be?problematic:?backslash?(),?quote?(")?and?ampersand?(&).??Here's?my?method?of?dealing?with?it:data?=?data.split("%").join("%25")???????????.split("").join("%5c")???????????.split(""").join("%22")???????????.split("&").join("%26");//?safe?to?send?data?nowExternalInterface.call("alert",?data);So?I?chosen?to?encode?special?chars?using?the?“%XX”?notation.??I'm?encoding?“%”?first,?so?we?can?safely?use?it?for?other?characters.??Then?backslash,?then?quotes,?then?ampersand.Note?how?complex?it?has?to?be?because?Flash?(8?at?least)?doesn't?support?RegExp-s,?nor?does?it?have?a?string.replace?function.On?the?JS?side,?when?I?receive?data?I'm?doing?the?reverse?transformation:data?=?data.replace(/%22/g,?""")???????????.replace(/%5c/g,?"")???????????.replace(/%26/g,?"&")???????????.replace(/%25/g,?"%");A?different?solution?I?found?on?some?sites?was?to?use?escape()?in?ActionScript,?and?unescape()?in?JavaScript.??This?should?be?theoretically?faster?since?it's?one?function?call?(and?there's?a?good?chance?that?this?function?is?implemented?in?low?level?C);?however,?Unicode?characters?get?mangled?in?translation?(curiously,?this?is?a?documented?bug).