java nodelist

NodeList subnodelist = Rootnode.getchildnodes ();for (int i = 0; i System.out.println ("Node name of child node:" + Subnodelist.item (i). Getnodename ());SYSTEM.OUT.PRINTLN (node text content of child nodes: + Subnodelist.item (i). Gettextcontent ());} public void ParseXml03 () {try{Create a Documentbuilder factory instanceDocumentbuilderfactory dbf = Documentbuilderfactory.newinstance ();A new documentbuilder.Documentbuilder db = Dbf.newdocumentb

Yesterday saw a queryselectorall () thing, found that the use of similar to the Getelementsby series, they want to delve into the differences between them, the following is the information found. PS: The reason to understand this knowledge point Two days ago, when I reread the JS Dom programming, I saw the chapter on getting the DOM elements, and then I saw getElementsByTagName () and Getelementsbyclassname (), and then I learned about a new Dom api– the modern browser. Queryselectorall (). In m

node is found, the node matching the name attribute is searched. that is, in the HTML4.01 DTD, the browser should first obtain the node through ID. followed by name.In the XHTML 1.0 document, only nodes whose ids match are searched.For the value of the node (id or name) attribute, this method ignores the case sensitivity in HTML documents, while in XHTML documents, the Case sensitivity is required. The bold part is very important in the above text. Without this as a guide, it is difficul

Like what: Copy Code code as follows: var anchors = document.getElementsByTagName ("a"); for (i = 0; i var ele=anchors[i];//takes an element Some code here } The above code represents getting all the link elements in the document and then traversing to do something. Perhaps you might ask, is this a set of DOM elements obtained by this method not an array? You see, you can get the length attribute directly, and you can also take the corresponding individual element a

For example: CopyCode The Code is as follows: var anchors = Document. getelementsbytagname (""); For (I = 0; I VaR ele = anchors [I]; // obtain an element // Some code here } The code above indicates getting all the link elements in the document, and then traversing to do something.Maybe you will ask, isn't the DOM element obtained in this way an array? You can get the Length attribute directly, and obtain the corresponding individual elements based on the index. According to the famous duck t

In a recent reading of JavaScript advanced programming, I saw the phrase: "Understanding nodelist and Htmlcollection is the key to a thorough understanding of the DOM in general." , so I think we should write a blog about nodelist and htmlcollection to get a good understanding and summarize the knowledge points.NodeListNodeList is a collection of nodes (which can contain elements and other nodes), and in th

NodeList objects are very similar in some ways and arrays, and it appears that you can directly use methods inherited from Array.prototype. However, in addition to the Foreach method, NodeList does not have these array-like methods.The inheritance mechanism of JavaScript is prototype-based. Array elements have some array methods (such as ForEach and map) because they have these methods on the prototype chai

Main API that involves getting elementsWhen getting native DOM elements, it mainly involves these Dom APIs (linked to living standard): Nodeand corresponding setsNodeList Element(Inheritance Node ) and corresponding setsHTMLCollection Document(Inherited Node ) Note: The plan supersedes NodeList and HTMLCollection is Elements not currently widely implementedBasic knowledge--NodeList v.s

, but rather a nodelist. NodeList is not an array.What a surprise,right?1. Why is nodelist not an array?The most straightforward way to verify that nodelist is not an array is to try array-specific push and pop Dafa:var anchors = document.getElementsByTagName ("a"); var newele = document.createelement ("a"); // create

, and errors may not occur.However, it is not an array, but a nodelist. Nodelist is not an array.What a surprise, right? 1. Why is nodelist not an array? Verify whether nodelist is an array. The most direct method may be to try the dedicated push and pop methods of array: VaR anchors = Document. getelementsbytagna

for loops are not easy to use, and errors may not occur. However, it is not an Array, but a NodeList. NodeList is not an array. What a surprise, right? 1. Why is NodeList not an array? Verify whether NodeList is an Array. The most direct method may be to try the dedicated push and pop methods of Array: The Code is

In the console typeof NodeList The result of the execution is: function, and the results are entered in the console nodelist, the effect is as follows: found that in addition to function inside nothing, so directly new nodelist, the effect is as follows: Results will be an error, check the relevant introduction of nodelis