javascript - 如何使用spidermonkey

Question

求指点，还有编译js代码一直报错请看看：

源码：

var sentence = "the quick brown fox jumped over the lazy dog";
var words = sentence.split(" ");
for (var i = 0; i<  words.length; ++i) {
   print("word " + i + ": " + words[i]);
}