throw new TypeError("Cannot call a class as a function"); } } function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "...
function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError('Cannot call a class as a function'); } } 这个函数特别简单,当执行函数A的时候,不允许this不是A的子类实例,比如直接这样调用A(),但是在A的子类B中可以这样调用:A.apply(this, arguments...
function _classCallCheck(instance, Constructor) { // 检查是否成功创建了一个对象 if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } var Person = function Person() { _classCallCheck(this, Person); }; 你可能会一头雾水,_classCallCheck...
(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } } function _defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor....
interfaceBar{}@dclassFoo{@dstaticstaticMember=1@d member=2@dmethod(foo:number,bar:Bar,baz:Foo):string{}constructor(a:Bar){}} 转换结果: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 var__metadata=(this&&this.__metadata)||function(k,v){if(typeofReflect==='object'&&typeofReflect....
on('shown.bs.modal', function () { $('#myInput').focus() }) 实例 静态实例 以下模态框包含了模态框的头、体和一组放置于底部的按钮。 × Modal title One fine body… Close Save changes <div class="modal fade" tabindex="-1" role="dialog"> <div class="modal-dialog" role="document...
定义一个class: 每一个使用class方式定义的类默认都有一个constructor函数, 这个函数是构造函数的主函数, 该函数体内部的this指向生成的实例, say() {}为原型上的方法, 我们定义一个简单的类 : "use strict"; class Person { constructor(name) {this.name =name; ...
on('shown.bs.modal', function () { $('#myInput').focus() }) Examples Static example A rendered modal with header, body, and set of actions in the footer. × Modal title One fine body… Close Save changes <div class="modal fade" tabindex="-1" role="dialog"> <div class="...
accessing value from dropdown list in VBscript function? ActiveX control '8856f961-340a-11d0-a96b-00c04fd705a2' cannot be instantiated because the current thread is not in a single-threaded apartment Add 'onclick' attribute to dynamically generated radio button code behind add a new row to gri...
String.prototype.sloppyMethod = function () { console.log(typeof this); // object console.log(this instanceof String); // true }; ''.sloppyMethod(); // call the above method 在严格模式下,会透明地使用包装原型中的方法: String.prototype.strictMethod = function () { ...