Ajax

Front-end javascript:Function ajaxget (url, obj)  {    var request;    if (Window. XMLHttpRequest)  {        request = new  XMLHttpRequest ();    } else {         Request = new activexobject (' Microsoft.XMLHTTP '); //  compatible ie    }

Today there is a need to do the project, the page needs to upload a picture, before the resolution, not written down.In front of the user to select a picture, and then can preview, and then upload, I resolved.Preview:There is an ordinary input tag

Add Event Handlingfunction addevent (obj, type, fn) {if (Obj.addeventlistener) {Obj.addeventlistener (Type, FN, false);} else if (obj.attachevent) {Obj.attachevent (' on ' + type, function () {Fn.call (obj);});}}Remove event Handlingfunction

Front desk//Delete multiple/single datafunctiondel (CID) {varId= "; if(cid== '-1 '){ if(Getselections (). length > 0) {ID=getselections (); }Else{$.messager.alert (Prompt, select the row to delete, error); return; } }Else{ID=CID; }

JavaScript uses AJAX for asynchronous communication one, browser-to-server synchronization and asynchronous communication 1. Synchronization: is blocked, the browser waits for the server's response after sending a request to the server, without

XMLHttpRequest the method in the object that is related to the header:setRequestHeader (,)-Sets the header with the specified value.getResponseHeader ()--Gets the value of the specified header;getAllResponseHeaders ()--Gets all headers as a single

1. Import the relevant jar package: Jackson-annotation-2.5.4.jar,jackson-core-2.5.4.jar,jackson-databind-2.5.4.jar.Related configurations in 2.spring-servlet.xml:Namespaces added in mvc:xmlns:mvc=

Ajax is not able to directly transfer objects or arrays, and some people handle their own, can be the data according to their own standards to connect to a string, and then to the back-end processing. But the uncertainty of the data. Cause a

Get a better understanding of jquery's Ajax with a detailed parsing process through JavaScript Ajax.Incidentally, I will be in the back of the whole set of Css3,php,mysql development Notes pack to Baidu Cloud, there is a need to go directly to the

1 /*This can be written when the front desk passes the parameters*/2 varChessid = "123";3 varI=0;4 5 vardata = [];6 7 /*add a single parameter*/8Data.push ({name: "type", Value: "Assignment"});9Data.push ({name: "id",

function Myajax (options) {Create a new local object to hold various parameters for user inputvar opt={type:options.type| | " Get ",//Get user input transfer method, optional, not write as Getdata:options.data| | "",//Get the data entered by the

function Myajax (options) {Create a new local object to hold various parameters for user inputvar opt={type:options.type| | " Get ",//Get user input transfer method, optional, not write as Getdata:options.data| | "",//Get the data entered by the

JQuery-AJAX Load () methodJQuery Load () methodThe JQuery load () method is a simple but powerful AJAX method.The load () method loads the data from the server and puts the returned data into the selected element.Grammar:$(selector).

Web asynchronous applications are now implemented based on XMLHttpRequest / ActiveXObject (IE), which are not specifically designed for resource acquisition, so their APIs are complex and require developers to deal with compatibility issues. While

Ajax-jquery method-Getting Started 01 (finishing), ajax-jquery01 ----------------------------------- 7.07.21 write ----------------------------------------- Compared with native javascript, jquery's ajax is easy to understand. One is 100x100, and

Solve Chinese garbled characters in Ajax loading JSon data, ajaxjson I. Problem Description When I use zTree to asynchronously refresh the parent menu, the server returns Chinese garbled characters, but SpringMvc is used in the project and Chinese

JavaScript operation form _ dynamic node Java School, javascriptjava Using JavaScript to operate a form is similar to operating a DOM, because the form itself is also a DOM tree. However, the input box and drop-down box of a form can receive user

Use Ajax to implement a simple example with percentage progress bar and ajax percentage Requirement: a progress bar with a percentage is displayed on the page when you perform operations such as long-transfer and storage of files to provide a good

How to Implement Asynchronous refresh by hand Ajax and asynchronous by hand ajax The so-called asynchronous refresh means that the entire webpage is not refreshed to update data. Ajax can be implemented only through js, and asynchronous Refresh can

Upload an instance with a progress bar Effect Based on the fileUpload file (mandatory ). During file upload, if we can see a better progress bar, the idea is that the server listens to the progress in real time with the listener and saves it to the