layer.events.on({"layerInitialized":addLayer});}functionaddLayer(){//将Layer图层加载到Map对象上。map.addLayers([layer]);//出图,设置中心点,指定放缩级别。map.setCenter(newSuperMap.LonLat(118.11908,36.68166),3);}</script></head> Step3:使用地图控件。 控件用来控制地图的显示和对交互操作的响应,...
本文基于Vue 3.2.30版本源码进行分析为了增加可读性,会对源码进行删减、调整顺序、改变部分分支条件的操作,文中所有源码均可视作为伪代码由于ts版本代码携...
find(function(sublayer){ return sublayer.id === tracksId; }); blendMode Property blendMode String Since: ArcGIS Maps SDK for JavaScript 4.16 Blend modes are used to blend layers together to create an interesting effect in a layer, or even to produce what seems like a new layer. ...
This option is not applicable if navigationMode is set to classic. (As of v2.6) require([ "esri/map", ... ], function(Map, ... ) { var map = new Map("map",{ extent: initExtent, fadeOnZoom: true }); ...}); <Boolean> fitExtent Optional When true, for maps that contain ...
Map set() function in JavaScript - The set() function of Map object adds or updates elements (key-value pairs) to a Map object.SyntaxIts Syntax is as followsmapVar.set()Example Live Demo JavaScript Example var mapVar = new Map(); m
WeakMap 是一种键值对的集合,其中的键必须是对象或非全局注册的符号,且值可以是任意的 JavaScript 类型,并且不会创建对它的键的强引用。换句话说,一个对象作为 WeakMap 的键存在,不会阻止该对象被垃圾回收。一旦一个对象作为键被回收,那么在 WeakMap 中相应的值便成为
代码语言:javascript 代码运行次数:0 运行 AI代码解释 map.on('click',e=>{map.setFilter('3d-buildings',['!=',['get','floor'],-1])map.setFilter('3d-buildings-highlight',['==',['get','floor'],-1])map.setFilter('3d-buildings-top-highlight',['==',['get','floor'],-1])})ma...
options.transformRequest(RequestTransformFunction)(default null) A callback run before the Map makes a request for an external URL. The callback can be used to modify the url, set headers, or set the credentials property for cross-origin requests. Expected to return a RequestParameters object wi...
javascript基础1,主要写(==和 的区别), Array对象, Object对象, this关键字,短路操作,Set集合,Map集合和String字符串操作。 1. == , 1. 在js中需要值相等类型相等 2. == 在js中值相等,类型不相等会自动转换 2.Array 全部Array
React报错之map() is not a function 正文从这开始~ 总览 当我们对一个不是数组的值调用map()方法时,就会产生"TypeError: map is not a function"错误。为了解决该错误,请将你调用map()方法的值记录在console.log上,并确保只对有效的数组调用map。