解决方案：

watch的时候，对于对象的赋值，最好用深拷贝，即如下图：

watch:{    row: function (nv, ov) {var that = this;that.indata.row = JSON.parse(JSON.stringify(nv));//如果是对象，请用深入的for (var i in that.indata.row.ttlist) {that.$set(that.indata.row.ttlist[i], "sitindex", 0);//设置响应式}that.$forceUpdate();}
}