two-binding.js

    // 将元素属性和数据进行绑定
    function bind(obj, prop, element, config) {
        if(config) {
            Object.defineProperty(obj, prop, {
                get: config.get,
                set: config.set,
                enumerable: true,
                configurable: true
            });
        }else {
            Object.defineProperty(obj, prop, {
                get: function () {
                    return element.val();
                },
                set: function (newValue) {
                    element.val(newValue);
                },
                enumerable: true,
                configurable: true
            });
        }
    }