The examples in this article describe the common API functions for JavaScript array objects. Share to everyone for your reference, specific as follows:
1. Concat ()
Connect two or more arrays and return the results
var a = [1,2,3];
var B = A.concat (6,7);
Console.log (a); [1,2,3]
Console.log (b);//[1,2,3,6,7]
2. Join (STR)
Separates all elements of an array with STR, with the default comma
1, to the official website download the latest version: ArcGIS API for JavaScript 3.92. Extract two compressed packages respectively, then put the Library folder under the Arcgis_js_v39_api\arcgis_js_v39_api\arcgis_js_api folder to Arcgis_ under the Js_v39_sdk\arcgis_js_api folder, such as:Then deploy the arcgis_js_v39_sdk to IIS.In the browser, enter: http://Click the ArcGIS
In the 4.7 release, it was good news not only to increase the rendering support for WEBGL (rendering front-end speed and rendering volume), to enhance promises syntax support in ES6, but also to support NPM management and webpack packaging.
"means that you can introduce JSAPI without esri-loader This package," said--arcgis.Currently not yet adjourned
1. PrefaceIf you want to organize your ArcGIS API for Ja
article. This is simply to say that its role is to add a record in the browser's history object.
Copy Code code as follows:
Window.history.pushState (State object, title, URL);
The above line command allows the address bar to appear with a new URL. The Pushstate method of the History object accepts three parameters, the new URL is the third parameter, and the first two parameters can be null.
Window.history.pushState (null, NULL, NEWURL);
At present, the major brow
This article describes how to use the Baidu map api and html5 features of javascript to obtain the location of a browser.
The Code is as follows:
Click this button to get your location:
Try it
larger image)you can see that each layer is wrapped by a div, and if you set the transparency of the outermost div, the map included will also change to the corresponding transparency. So far, the solution is basically clear: find the div for each layer, and then dynamically change the transparency of the corresponding div within the animation. Next, the code is implemented.
Copy CodeThe code above mainly introduces the
This time over a JavaScript API, found a lot of good wheels, save the trouble of making. Here is a summary of the following, the need for small partners can refer to.
Go straight to the point
Parsing String objects
As we all know, JavaScript objects can be serialized as Json,json or parsed into objects, but the problem is that if there is a "thing" that is nei
The API has changed a lot since the ArcGIS API for JavaScript 4.X version was upgraded.Which supported the Webearth display, mainly through the Esri/views/sceneview implementation.In the new version, ESRI's own maps are loaded by default.If you want to load additional maps, you can do so by extending Basetilelayer.For example, the latest version loads the demo of
If your site uses some of the mainstream Ajax library such as jquery or prototype, you can use Google Javascript API loader to load your AJAX library directly.
The specific approach is the following example:
Because Google uses a CDN (content distribution network) to send data to clients faster than your server, and the client browser caches content based on links, the more sites that use Google
Recently made a small website, the base map uses the services of the world map, with some of the GIS features provided by ArcGIS JavaScript. Personally feel that the world map API is simple and easy to use, even my rookie to see a few sample code can quickly make the site containing the map. Just, the current map of heaven and earth, Basically only data, there is no GIS related to ESRI's stuff.
Look at ESRI
First, the API function classification:Layer Class (Map ILayer) js4.0 version is added after Scenelayer (The Scenelayer is a layer type designed for On-demand streaming and displaying large amounts of data in a sceneview.Scenelayers support Geometry types:point and 3D Objects).Graphic Drawing (graphic)Symbol renderingQuery Retrieval (Task)Geometry operation (geometry)Online editing (feature service)Network analysisGeo-processingTemporal displayCommon
the File API.
By listening to the change event, we can learn about the files that the user chooses, and add a Files collection that contains the file object, each of which corresponds to one. And all have the following read-only property name,size,type,lastmodifieddate.
Take the for example, monitor the onchange to print its file object:
From this we can learn some information about the file format, filename, file size, etc. that the user cho
First introduce JavaScript API files
This API provides a total of 6 interfaces, Geoip_country_code () {Country Code},geoip_country_ name () {Country name},geoip_city () {city name},geoip_region () {Region code}, Geoip_latitude () {longitude},geoip_longitude () {latitude}.
Where the region code for Maxmind internal use of a code, the provincial provinces in ac
You need to be a Facebook app ID before you use the app, which doesn't have to be said.Initialize Facebook information in JavaScript after generating the Facebook APP IDAnd I've defined some of the global variables I need to get the data.Copy CodeOnce the initialization is complete, you can trigger the ability to get Facebook information through an event. (I used the ID of the click event)Copy CodeHere's the point here, based on the Facebook informati
For web programmers, it's always a hassle to process file uploads on a Web page. In the past, we can not drag and drop upload pictures, there is no complex Ajax upload technology, rarely deal with multiple file bulk uploads. We also can't get the information in the upload process, unless we get it from the server after the upload is complete. Sometimes, when you upload finished, you will find that the uploaded file is not suitable!
Today, the HTML5 Revolution, the birth of modern browsers, and
javascript|yahoo| search engine U.S. Eastern Time March 1, Yahoo co-founder of one of Jerry Yang will announce the company's search network will enter the Web services. Yahoo Company in
www.developer.yahoo.comThe website has established Yahoo Search Developer Network, the company plans to launch the program at the Search engine Strategy Conference in New York (Search Engine Strategies Conference). The network will allow developers to build new applica
Some suggestions and guidelines on JavaScript API design
This article mainly introduces some suggestions and guidelines on JavaScript API design. It lists many well-known JS APIs for help instructions and strongly recommends them! For more information, see
Design is a common concept. It can generally be understood as a
Put a good mature ajs 3.19 do not learn, why to touch the AJS 4.2?
Gentlemen, I like the tender--yuck yuck.
Gentlemen, I like 3D? New things will replace old things not ~
ArcGIS API for JavaScript 4.2 overviewAJS 4.2, ArcGIS API for JavaScript 4.2, is a product developed by ESRI in the United States for th
Download the official demo,4.7, ran in the terminal, the test was successful (not packaged)In the test to reduce the unnecessary files, using the HTTP protocol run (the file protocol is not OK)The simplest directory is as follows:I put the above file in a folder called demo, run the NPM command:Because I have a cache before, so the download will be very fast, otherwise it will take a long time.After all, the Node_modules folder volume is still quite large:If you are not satisfied with the volume
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