JSON.stringify auto removed Object undefined value keys bug! ❌
JSON.stringify(this.ruleForm)
// undefined
this.ruleForm
// undefined
this.ruleForm = {id: 1, name: undefined, age: ''};
// {id: 1, name: undefined, age: ""}
JSON.stringify(this.ruleForm)
// "{"id":1,"age":""}"
demo
element-ui form form-item 自动绑定 bug & JSON.stringify
https://codepen.io/xgqfrms/pen/PobVdxo?editors=1111
refs