zhishaofei3

摘要： let triangle={ a:1, b:2, c:3 } function coloTriangle(){ this.color='red'; } coloTriangle.prototype=triangle; let color=new coloTriangle(); Object.defi 阅读全文

摘要： var obj = {}Reflect.defineProperty(obj, 'a', {value: 1, configurable: false, writable: true}) // 可以改，不能删 Reflect.defineProperty(obj, 'b', {value: 1, c 阅读全文