SOURCE

 let input = document.getElementById('testInput');
 Object.defineProperty(input, 'value', {
     configurable: true,
     set: function(value) {
        console.log('你设置了'+this+'的值为:'+value);
     },
     get: function() {
         return '你访问了'+this;
     }
 });
console.log(input.value);
console.log(input.value=1);

    <input type="text" id="testInput" />