如把
"[jjj:111,[kkkk:222,ggg:333],mmm:444]"替换为
"{jjj:111,[kkkk:222,ggg:333],mmm:444}"
var s = "[jjj:111,[kkkk:222,ggg:333],mmm:444]";
alert(s.replace(/^[\[]/,"{").replace(/[\]]$/,"}"));
自己写了一个,
str = str.replace(/^\[(.*)\]$/, "\{$1\}")