JS正则表达式替换字符串{{}}

我有一个JS字符串
var testStr = "{{aaaaaa}}-{{bbbbbb}}";
想通用正则表达式替换{{*}}为新的新字符串“aaaaaa-bbbbbb”

http://www.jb51.net/article/48861.htm

var testStr = "{{aaaaaa}}-{{bbbbbb}}";

alert(testStr.replace(/{{(.+?)}}/g, '$1'));
console.log(testStr.replace(/{{(.+?)}}/g, '$1'));

如果有帮助，希望采纳....

    var kv = { aaaaaa: 'aaaaaa的值',bbbbbb:'BBB键值' }
    var testStr = "{{aaaaaa}}-{{bbbbbb}}";
    testStr = testStr.replace(/\{\{([^\}]+)\}\}/g, function ($0, $1) { return kv[$1] || $1 });
    alert(testStr)