var a ="['a','b','c']";
转换成
b = ['a','b','c'];
b=eval(a)1、b = eval(a);
2、如果不想用eval，那就手动好了：
b = a.substring(2, a.length-2).replace(/','/g, ',').split(',');var b = new Function("return " + a).call();var a ="['a','b','c']";
var result = a.substring(1, a.length - 1).split(',');