这意味着,如果你修改了这个实例的属性或调用它的方法,所有导入该实例的模块都会看到这些更改,因为它们引用的是同一个对象。 以下是一个示例: moduleA.js: classMyClass{constructor(){this.value=42;}increment(){this.value++;}}// 导出类的实例exportconstmyInstance=newMyClass(); moduleB.js: // 导入实例...
exportclassClassName {...}//导出列表export { name1, name2, …, nameN };//重命名导出export { variable1asname1, variable2asname2, …, nameN };//解构导出并重命名exportconst{ name1, name2: bar } =o;//默认导出exportdefaultexpression; exportdefaultfunction (…) { … }//also class, f...
JSExport() Default constructor, initializes a new instance of this class. JSExport(IntPtr) A constructor used when creating managed representations of unmanaged objects; Called by the runtime. JSExport(NSObjectFlag) Constructor to call on derived classes to skip initialization and merely allocate ...
// 导出事先定义的特性export{myFunction,myVariable};// 导出单个特性(可以导出var,let,//const,function,class)exportletmyVariable=Math.sqrt(2);exportfunctionmyFunction(){...}; 默认导出: // 导出事先定义的特性作为默认值export{myFunctionasdefault};// 导出单个特性作为默认值exportdefaultfunction(){....
("Xamarin_iOS__JavaScriptCore_JSExport", false)] [ObjCRuntime.Introduced(ObjCRuntime.PlatformName.MacOSX, 10, 9, ObjCRuntime.PlatformArchitecture.Arch64, null)] [ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 7, 0, ObjCRuntime.PlatformArchitecture.All, null)] public class JSExport :...
("Xamarin_iOS__JavaScriptCore_JSExport", false)] [ObjCRuntime.Introduced(ObjCRuntime.PlatformName.MacOSX, 10, 9, ObjCRuntime.PlatformArchitecture.Arch64, null)] [ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 7, 0, ObjCRuntime.PlatformArchitecture.All, null)] public class JSExport :...
("Xamarin_iOS__JavaScriptCore_JSExport", false)] [ObjCRuntime.Introduced(ObjCRuntime.PlatformName.MacOSX, 10, 9, ObjCRuntime.PlatformArchitecture.Arch64, null)] [ObjCRuntime.Introduced(ObjCRuntime.PlatformName.iOS, 7, 0, ObjCRuntime.PlatformArchitecture.All, null)] public class JSExport :...
当你调用new ClassNameHere()时，它执行constructor()您可以简单地导出类，而不是示例化它们：runners....
class let const export 还有一种特殊的用法,就是跟 default 联合使用。export default 表示导出一个默认变量值,它可以用于 function 和 class。这里导出的变量是没有名称的,可以使用import x from "./a.js"这样的语法,在模块中引入。 export default还支持一种语法,后面跟一个表达式,例如: ...
我在vue里面的components组件下写了一个class类components/canvasBase/index.vue export class Arrow { constructor(props){ this.x = 0; this.y = 0; this.w = 60; this.h = 30; this.rotation = 0; this.fillStyle = 'rgb(57, 119, 224)'; this.strokeStyle = 'rgba(0, 0, 0, 0)'; Objec...