前言: element是特殊的node 一段纯文本即text-node也是node 但不是element w3c的原话是 A node can be an element node, an attribute node, a text node, or any other of the node types explained in the "Node types" chapter. 一.xmlnode类节点: xmlnode类表示xml文档中的单个节点,其命名空间为:System.X
一.JavaScript判断对象类型 1.可以使用typeof函数判断对象类型 function checkObject1(){ var str="str"; console.log(typeof(str))//输出"string"; console.log(typeof(str)=="string")//输出true; } 2.使用对象的构造函数属性(constructor),来判断对象的类型: function checkObject2()
Description During the programming classes Vasya was assigned a difficult problem. However, he doesn't know how to code and was unable to find the solution in the Internet, so he asks you to help. You are given a sequence a, consisting of ndistinct i