<script type="text/javascript">
function foo() {
function sayHello() { console.log('hello'); }
function sayWTF() { console.log('WTF'); }
}
var str = new foo();
~function manipulateString(str, func) {
str[func]();
}(str,'sayHello');
</script>
谁帮忙看看什么错。。。最近从基础js学起了，一大堆不会啊I
