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Element layer Range Query attributes arcgis api for js, arcgisapi This blog is reprinted. Thanks to the blogger. Original article: Workshop.Element layer Range Query attributes This article mainly uses Query and FeatureLayer. setDefinitionExpression to Query the range attribute of the element layer. The query result is displayed by FeatureTable and the shape can be displayed on the map.. Sometimes, we often

JS Call API

Original addressWe learned about the creation of maps and markers in the front. So today we're going to learn how to display a window on a map (Infowindow)The Infowindow constructor is:Infowindow (opts?:infowindowoptions). The infowindowoptions Object Specifies the initialization parameters that are used to display the information window. Infowindowoptions Object Properties:content: contains a text string or displays a DOM node in the Information window. Pixeloffset: represents the position offs

Server, so that we can add or delete the feature to the database that it was saved to.Right-click the GIS server that we need to register to, and select the server Properties option.Switch to the Data Store tab, click the + button, add the database, and then click the Import button on the Register Database page to import the newly registered databases.When a green tick is present in front of the database, it indicates a successful registration.Note: The above operations are performed in ArcMap

elementsArrayobj.reverse (); Reverse the array, returning the array address after the reverse orderCases:var a = [1,2,3,4,5];var B = A.reverse (); A result is: [5,4,3,2,1],b result is: [5,4,3,2,1]Note that this returns the array address, not the copy of the array, and if the original array changes after the reverse order, then the inverse array is arbitrarily changed.On top of this, do the following:A.pop (); A result is: [5,4,3,2],b result is: [5,4,3,2]OrB.pop (); A result is: [5,4,3,2],b resu

array and returns the length of the new array.Arr.shift ()Deletes the first element of the array and returns the value of the first element of the array.Arr.pop ()Deletes the last element of the array and returns the last element of the array.Arr.push (Elem1,[elem2],[...],[elemn])Adds one or more elements to the end of the array and returns the length of the new array.7.join ()Arr.join ([separator])Concatenate all the elements in the array into a single string.If there is no parameter separator

Array classvar arr=[1,5,76,433,34,34];//array max function Maxarr (arr) {return Math.max.apply (null, arr);} Array minimum function Minarr (arr) {return Math.min.apply (null, arr);} Maxarr (arr);//1 Random number Generates an integer var ran=parseint (Math.random () * (max-min+1) +min) //generated random number [Min,max] for the integer vars 0,max parseint (Math.random () * (max+1)) Date Time Class 24 hours to 12 hours h>12 (h-=12); Angle Angle c

QQ Interconnect JS sdk:http://wiki.connect.qq.com/js_sdk%e4%bd%bf%e7%94%a8%e8%af%b4%e6%98%8e Copy Code code as follows: Add the following information to the body: Set QQ Share button Qc. Login ( { Btnid: The node ID of the "qqloginbtn"//Insert button }, function (Reqdata, opts) {//Login successful Replace the button display state method based on the returned data var dom = document.getElementById (opts[' Btnid '), _logoutt

(3) underscore. js framework Objects API Learning Keys_.keys(object) Retrieve all the names ofObject'S properties. _.keys({one: 1, two: 2, three: 3});=> ["one", "two", "three"] Values_.values(object) Return all of the values of the object's properties. _.values({one: 1, two: 2, three: 3});=> [1, 2, 3] Pairs_.pairs(object) Convert an object into a list[Key, value]Pairs. _.pairs({one: 1, two: 2, three: 3});

':116.32911768751899,' Latitude ':39.936629687519, };varInitial_location = Shijiazhuang_changangongyuan;//Create Baidu map with the default location.Createmap (Initial_location.longitude, initial_location.latitude);//Load inital data.Refreshbrokercaselist ();if(navigator.geolocation) {getcurrentlocation ( function (position) {Map.panto (NewBmap.point (Position.longitude, position.latitude)); Refreshbrokercaselist (); }); } map.addeventlistener ("Dragend", fu

1 var map;2 require (["Esri/map", "dojo/domready!"], function (map) {3 map = new Map ("GHL", {4 5 Zoom:3,6 basemap: "Topo",7 Logo:false,8 9 Ten }); One dojo.connect (map, "OnMouseMove", function (e) { A var MP = E.mappoint; - var sp = e.screenpoint; - Dojo.byid ("Map1"). InnerHTML = mp.x+ "/" +sp.x; the Dojo.byid ("Map2"). InnerHTML = mp.y+ "/" +SP.Y; - }) - }); - + -

When using jquery, some APIs are easy to confuse, with APIs and source records:1. $elem. attr (), $elem. Prop ()1) Attribute values is strings with the exception of a few attributes such as value and TabIndex.The attribute value is usually a string type, except for some other properties, such as value, TabIndex.2) DOM element Properties generally affect the dynamic state of a DOM element without changing the serialized HTML Attribu Te. . Prop () should is used when setting SelectedIndex, TagName

and print. console.dirxml () //For displaying DOM nodes in the form of a directory tree. Console.assert () //accepts two parameters, the first argument is an expression, and the second argument is a string. The second parameter is output only if the first argument is false, otherwise there will be no result. //These two methods are used for timing and can calculate the exact time spent on an operation. console.time ()console.timeend ()the//time method means that the timing begins, and the Time

+ ") varNstr5=str.substr (4,7)//starting with the element subscript 4, the element containing the subscript 4 is truncated seven characters backward. That is, a string of length 7 is intercepted. document.write ("The Role of Substr" +nstr5+ ") varNstr6=str.substr ( -7,7)//Seven characters are truncated from the bottom of the 7th element, including the bottom seventh element. That is, a string of length 7 is intercepted. document.write

Zoom Slider29EnablepanAllow the mouse to drag the map30AddlayelsAdd a layer4. Event:Onextentchange Map extent Change EventOnbasemapchange The map's basemap has changedonLoad Occurs when the first layer or basemap is added to the map OnClick Occurs when a click occurs on the mapOnlayeradd Occurs when a layer is addedOnlayersaddresult Occurs after all layers have been added, after us

Server, so that we can add or delete the feature to the database that it was saved to.Right-click the GIS server that we need to register to, and select the server Properties option.Switch to the Data Store tab, click the + button, add the database, and then click the Import button on the Register Database page to import the newly registered databases.When a green tick is present in front of the database, it indicates a successful registration.Note: The above operations are performed in ArcMap

public class Baiduposition{public int status {get; set;}Public result result {get; set;}}public class Result{Public location location {get; set;}public int precise {get; set;}public int confidence {get; set;}public string level {get; set;}}public class Location{public decimal LNG;public decimal lat;Public location (decimal x, decimal y){LNG = x;lat = y;}}public static Class Baidumap{public static location Getsupplierlocation (string address){Address + = "Shanghai City" + address;String url = "ht

Document directory Use setTimeout to delay function execution Use clearTimeout to cancel an execution plan Develop and cancel repeated execution plans for Functions Use process. nextTick to delay function execution to the next round of the event Loop Congestion event Loop Exit event Loop Use setTimeout instead of setInterval to ensure the serialization of function execution For the list of articles in this series and the translation progress, see Node.

foreach Syntax:Arr.foreach (function (value, index, array) {...})Instance:// ForEach var arr = [1,2,3,4,5];arr.foreach (function (value, index, Array) { 2; }); Console.log (arr); // [2,4,6,8,10]Map Syntax:var newArr = Arr.map (function (value, index, array) {return to put the value of the new array})Instance:// Map var arr = [1,2,3,4,5]; var newArr = arr.map (function (value, index, array) { return2;}); Console.log (arr); // [1,2,3,4,5]console.log (NEWARR); // [2,4,6,8,10]Use of th

The CharAt () method returns the character at the specified position. The Stringobject.charat (index) indexOf () method returns the position of the first occurrence of a specified string value in a string. The Stringobject.indexof (searchvalue, Fromindex) substring () method is used to extract the character of a string intermediary between two specified subscripts. The stringobject.substring (start, stop) slice () method extracts a portion of a string and returns the extracted part with a new st