<script type="text/javascript">
var sentence = "the quick brown fox jumped over the lazy dog";
var words = sentence.split(" ");
for ( var i = 0; i < words.length; ++i) {
document.write("word " + i + ": " + words[i]+"<br />");
}
</script>
原文：http://www.cnblogs.com/feile/p/5369627.html