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      VueJS - 对象道具验证

      VueJS - Object Props validation(VueJS - 对象道具验证)
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                本文介绍了VueJS - 对象道具验证的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

                问题描述

                在 VueJS 中,如何验证 Object 类型的 props 以确保该对象定义了一些特定的字段?

                In VueJS, how can I validate Object type props in order to ensure that the object has some specific fields defined?

                例如,我想确保用户道具将具有姓名"、出生日期"等字段.

                For example, i want to ensure that the user prop will have the fields 'name', 'birthDate', and so on.

                提前致谢.

                推荐答案

                您可以为对象创建自定义验证器函数:

                You can create a custom validator function for objects:

                https://vuejs.org/v2/guide/components.html#道具验证

                  props: {
                     propF: {
                       validator: function (value) {
                       return value > 10
                     }
                   }
                }
                

                如果所有字段都存在,函数应该返回 true.

                Function should return true if all fields are present.

                示例:https://jsfiddle.net/wostex/63t082p2/27/

                <div id="app">
                <child :myprop="myObj"></child>
                </div>
                
                Vue.component('child', {
                    template: `<span>{{ myprop.id }} {{ myprop.name }}</span>`,
                    props: {
                      myprop: {
                        validator: function(obj) {
                          return (obj.id && Number.isInteger(obj.id) && obj.name && obj.name.length );
                        }
                      }
                    }
                });
                
                new Vue({
                    el: '#app',
                    data: {
                      myObj: {
                        id: 10,
                        name: 'Joe'
                      }
                    }
                });
                

                如果验证器失败,您将在浏览器控制台中看到 Vue 警告.

                If validator fails you will see a Vue warn in browser console.

                这篇关于VueJS - 对象道具验证的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

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