getOwnPropertyDescriptor使用

var descriptor, label, set;

descriptor = Object.getOwnPropertyDescriptor(cc.Label.prototype, "string");

descriptor = lo.defaults({}, descriptor);

set = descriptor.set;

descriptor.set = function(string) {
  return set.call(this, "123");
};

label = this.node.getComponent(cc.Label);

Object.defineProperty(label, "string", descriptor);

label.string = label.string

getOwnPropertyDescriptor使用

原文：https://www.cnblogs.com/xyptechnology/p/10329893.html