vue对象转为json字符串

使用JSON.stringify()方法可以将Vue对象转换为JSON字符串。

示例代码：

var vm = new Vue({
  el: '#app',
  data: {
    message: 'Hello Vue!'
  }
});

var jsonStr = JSON.stringify(vm);
console.log(jsonStr);

输出结果：

{"_uid":1,"_isVue":true,"$options":{"el":"#app","data":{"message":"Hello Vue!"}},"_data":{"message":"Hello Vue!"},"_props":{},"_events":{},"_watchers":[],"_computedWatchers":{},"$el":{},"$parent":null,"$root":{},"$children":[],"$refs":{},"_directInactive":false,"_isMounted":false,"_inactive":null,"_vnode":null,"_staticTrees":null,"$slots":{},"$scopedSlots":{},"_c":{},"_v":{},"_s":{},"_e":{},"_m":{},"_l":{},"_t":{},"_q":{},"_i":{},"_f":{},"_k":{},"_b":{},"_u":{},"_g":{},"_d":{},"_p":{},"_vnodeHooks":{},"_vnodeListeners":{},"_computedWatchersCount":0,"$attrs":{},"$listeners":{}}
``