document.location.href与document.frm.action有什么差别?

document.location.href与document.frm.action有什么差别? document.location.href.substring document.location.href.toLowerCase()是什么意思 document.location和window.location有什么区别 document.location.href='CouponAction.do?method= onChange="document.location.href=this.value 能不能一个词一个词的帮我解释一下 document.forms[0].action是什么意思 window.location和document.location的区别分析 document.add_news_form.action='news_save.asp?action=add是什么意思 URL:Unable to open location:Document not found on serve URL:Unable to open location:Document not found on server $(document).ready(function() {});写与不写有什么区别