javascriptDOM编程艺术_学习笔记_知识点 DOM

1 document.getElementById("purchases")

1 document.getElementsByTagName("li")
2 alert(document.getElementsByTagName("li").length);

1 document.getElementsByClassName("sale")

1 var paras = document.getElementsByTagName("p");
2 for(var i=0;i < paras.length;i++){
3     alert(paras[i].getAttribute("title"));
4 }

1 var shopping = document.getElementById("purchases");
2 shopping.setAttribute("title","a list of goods");

1 var body_element = document.getElementByTagName("body")[0];
2 body_element.childNodes
3 document.getElementByTagName("body")[0].childNodes

1 alert(body_element.nodeType);

1 alert(decription.nodeValue);
2 alert(decription.childNodes[0].nodeValue);