map.set('hobby',['吃饭','睡觉','打豆豆']); map.clear() console.log(map)//Map(0) {} has 用来表明map 中是否存在指定元素, 返回一个bool值. varmap =newMap(); map.set('name','LILI'); map.set('age',12); map.set('hobby',['吃饭','睡觉','打豆豆']); console.log(map.has(...
2.key的顺序不同,obj通过obj.keys()打印出来的属性顺序是 number–字符串,map的key顺序是声明顺序。 3.创建方式不同。obj有三种创建方式 字面量{}、new Object() 、构造函数。map仅支持new Map() obj的创建方式: constobj = {name:"zs",age:18}console.log(obj)// 2.new Objectletobj1 =newObject()...
updateForm(formId,bindingData); }catch(FormException e) { e.printStackTrace(); } break; } default: { Map<String, Object> result =newHashMap<String, Object>(); reply.writeString(ZSONObject.toZSONString(result)); returnfalse; } } returntrue; } }...
route-planner-vue by @Kasheftin: The tool for planning routes with multiple sortable layers, draggable directions, markers and shapes on google map. VueJS Example Projects on Github Vue Weather Notifier A small sample animation app with SVG and Vuex X-Flowchart-Vue - A flowchart editor with ...
上面代码原意是将一个 DOM 节点作为对象data的键,但是由于对象只接受字符串作为键名,所以element被自动转为字符串[object HTMLDivElement]。 为了解决这个问题,ES6 提供了 Map 数据结构。 1. 创建Map 它类似于对象,也是键值对的集合,但是“键”的范围不限于字符串,各种类型的值(包括对象)都可以当作键。也就是说...
We already have the precedent of Object.keys returning an array of own keys, and matched triplets of keys/values/entries iterators on Map/Set/Array. As such, per discussions on es-discuss and in at least one previous TC39 meeting, this proposal seeks to add Object.values and Object.entries...
The center property has been removed from DotScreenNode. The TSL object materialAOMap has been renamed to materialAO. The TSL object shadowWorldPosition has been renamed to shadowPositionWorld. PostProcessingUtils has been renamed to RendererUtils.170...
ImageBitmap对象 OffscreenCanvas对象 OffscreenCanvasRenderingContext2D对象 栅格组件 基本概念 grid-container grid-row grid-col svg组件 通用属性 svg rect circle ellipse path line polyline polygon text tspan textPath animate animateMotion animateTransform 自定义...
Object: 当前实例 地图 AMap.Map 地图对象类,封装了地图的属性设置、图层变更、事件交互等接口的类。 相关示例 new AMap.Map(div: (String | HTMLDivElement), opts: MapOptions) 参数说明: div ((String | HTMLDivElement)) 构造一个地图对象,参数container中传入地图容器DIV的ID值或者DIV对象, opts地图...
Then Mapbox GL JS initializes the map on the page and returns your Map object. Extends Evented. new Map class(options: Object) Parameters options(Object) NameDescription options.accessTokenstring default: null If specified, map will use this token instead of the one defined in mapboxgl....