javascript mind map

First need to apply for a Baidu map of JavaScript client applications, to generate a certified key, and then use this key to call Baidu map of the JavaScript interface, If we need to find a spot according to the place name, want to get the coordinates of the spot, you can refer to the code

Define map function Map () {this.container = {};} Put Key-value into Map Map.prototype.put = function (key, value) {try {if (key! = NULL Key! = "") this.container[ Key] = value;} catch (e) {return e;}};/ /Remove the corresponding value from the MAP according to key Map.prototype.get = function (key) {try {return this.

In JavaScript 1.6, JavaScript arrays add several useful methods: IndexOf, LastIndexOf, every, filter, ForEach, map, some, where the first two can be attributed to the element location method, Some of the latter can be categorized as iterative (iterative) methods. Chibi Senior Middle SchoolUnfortunately, these new methods are not supported by all browsers, in whic

Map method Prototype:Array1.map (callbackfn[, Thisarg])Parameters:Array1, must be selected. an Array object. This function is typically used for array objectsCALLBACKFN, must be selected. A function that can accept up to three parameters. for each element in the array, themap method calls the Callbackfn function one time. Thisarg, optional. The This keyword in the CALLBACKFN function can refer to the ob

1.forEach (): No return value, just call func for each elementIn simple terms, each value in the array is traversed sequentially, executing the function functionIf you only need to operate on an array element, you do not need to return any values when applicablevar shuzu=[1,2,3,4]var a= _.each (Shuzu,function(NUM1) { return NUM1})Console.log (a);The result is 1,2,3,4Note that there is no condition for NUM1 to be included in Num1 +1, the result is still 1,2,3,4 four numbers2.

Set is as interconnected and unordered as the definition of a set in mathematics (no index)Repeating elements are Set automatically filtered in:Set([1, 2, 3, 3, ‘3‘]);s; // Set {1, 2, 3, "3"}* Similar to collections in Python Map is a set of key-value pairs: var New Map ([[' Michael ',], [' Bob ', ' +], [' Tracy ', 'M.get]]); * Similar to a dictionary in PythonSet and

Briefly:Simply record the data structure map and array,In fact, in JavaScript, the weak type of scripting language, the array is also a dictionary, the following is mainly the simple use of dictionary arraysCode:1. Add a map to the array[HTML]View Plaincopy > html> head> Meta http-equiv= "content-type" content= "text/html; Charset=utf-8 "> titl

);// Added an interface method for calling html pagesMWebView. addJavascriptInterface (new Object (){// Here I define a method to open the map applicationPublic void startMap (){Intent mIntent = new Intent ();ComponentName component = new ComponentName ("Com. google. android. apps. maps ","Com. google. android. maps. MapsActivity ");MIntent. setComponent (component );StartActivity (mIntent );}}, "Demo ");// Load the pageMWebView. loadUrl ("file: // a

This is a simple for loop in javascript. It declares that the initial I value is 0 and determines whether I is less than 100. If yes, It executes the statement and then increases I by 1. Therefore, vari = 0 is executed only once, and the conditional expression I lt; 100 is executed Each byte of code has its temperature, and we provide a code thermometer. Double-click the source code 123 For (vari = 0; I This is a simple for loop

I got a Baidu map to mark the geographical location information and obtained the address through Baidu api. This map api is a javascript version. If you are interested, you can understand it. It may be helpful to you. Sometimes some things are not recorded, but when you look at it for a while, I will forget it. You need to read it again. Baidu

, - NewEsri.symbol.SimpleLineSymbol (Esri.symbol.SimpleLineSymbol.STYLE_DASHDOT, + NewDojo. Color ([0,0,255]), 2), NewDojo. Color ([255,255,0,0.5])); A at EsriConfig.defaults.map.zoomSymbol=Zoomsymbol.tojson (); - varMap= NewESRI. Map ("Map", {nav:false}); - varLayer= NewEsri.layers.ArcGISTiledMapServiceLayer ("Http://server.arcgisonline.com/ArcG

DescribeThis example shows how to include a custom button for panning a map. The map is placed in a fixed-width central unit of an HTML table with a width of 3 columns and a height of 3 rows. The remaining cells in the table are labeled with abbreviated buttons in 8 main directions. Each button invokes a different translation function on the map. For example, the

Define map function Map () {this.container = {};} Put Key-value into Map Map.prototype.put = function (key, value) {try {if (key! = null) {This.container[key] = value;}} Cat CH (e) {return e;}};/ /Remove the corresponding value from the MAP according to key Map.prototype.get = function (key,deft) {if (!this.containskey

Set Map Road (it is very useful for JSON fulfillment)var a = {};a["Key1"] = "value1"; a["Key2"] = "value2";Since it's a map, there's a way to retrieve the existence of a key. Write like thisif ("Key1" in a) { //something} else { //Something else}A simple sentence declares the key and value of the map in the way:var a = {' Key1 ': ' value1 ', ' key2 ': ' value

The map used in this article is mapMap Online API Addresshttp://union.mapbar.com/apidoc/Offline CHM format Download address:Http://union.mapbar.com/apidoc/chm/mapbarapi.rar Effect Chart: The Mapbar map API allows you to embed Mapbar maps into your own web pages using JavaScript. The API provides a number of ways to interact with maps (as shown on the Http://w

No nonsense, directly affixed to the code. Code One: var map=new map (); Map.put ("A", "a"); Map.put ("B", "B"); Map.put ("C", "C") ; Map.get ("a"); Back: A map.entryset ()//Return Entity[{key,value},{key,value}] Map.containskey (' Kevin ')//return: false function Map () {This.keys = new Array (); This.data = new Object (); /** * Put a key va

,element.value to get the key and value), and fails to return null + This. Element =function(_index) { - if(_index This. Elements.length) { the return NULL;Bayi } the return This. Elements[_index]; the } - - //determine if the map contains an element of the specified key the This. ContainsKey =function(_key) { the varbln =false; the Try { the for(i = 0; i This. elem

For Chinese developers in the creation of GIS applications, often the headache is the lack of basemap resources. In fact, the National Survey and Mapping Bureau to provide a good free resources: heaven and Earth map. Developers using the ArcGIS API can use the resource directly as a basemap for map applications.The ArcGIS JavaScript API has recently launched a ne

The code is as follows:Output Result:650) this.width=650; "src=" Http://s3.51cto.com/wyfs02/M00/52/74/wKioL1Rkc4mhCeXDAAMZwOgKzgw581.jpg "title=" Snapshot 30.jpg "alt=" Wkiol1rkc4mhcexdaamzwogkzgw581.jpg "/>Description: You can display the slider text description for the Map object settings This article from "It Technology Learning and communication" blog, declined reprint!ArcGIS JavaScript API implements b

Map set implemented by javascript and javascriptmap set A few days ago, the project wanted to use a map set of the same things. It took a while to get the object. Today, I am idle to implement it.Don't laugh Code Var Map = function () {/************ basic variable ***************/var hashmap = {}; var keys = []; var va