前端Vue的循环forEach等各种循环下,取每一项下面的有个对象里面的值方法

源码

<template>
    <div>
        {{tableData}}
    div>
template>

<script>
export default {
    data () {
        return {
            tableData: [
                {
                    "syncing": true,
                    "tokenId": 1,
                    "address": "0xbb0e17ef65f82ab018d8edd776e8dd940327b28b",
                    "chainId": 1,
                    "chain": {
                        "chainId": 1,
                        "chainName": "string",
                        "actionCode": "",
                        "chainDataUrl": "",
                        "apiUrl": "",
                        "apiToken": "",
                        "apiSecret": "",
                        "isDelete": false
                    },
                    "tokenName": "Axie Infinity Shard",
                    "symbol": "AXS",
                    "createTime": "2022-07-27T15:21:56.2603",
                    "totalSupply": 270000000,
                    "price": 1,
                    "syncVersion": 0
                },
                {
                    "syncing": false,
                    "tokenId": 2,
                    "address": "测试",
                    "chainId": 1,
                    "chain": {
                        "chainId": 2,
                        "chainName": "测试3",
                        "actionCode": "",
                        "chainDataUrl": "",
                        "apiUrl": "",
                        "apiToken": "",
                        "apiSecret": "",
                        "isDelete": false
                    },
                    "createTime": "2022-07-27T15:51:42.912249",
                    "syncVersion": 0
                },
                {
                    "syncing": true,
                    "tokenId": 6,
                    "address": "测试3",
                    "chainId": 2,
                    "createTime": "2022-07-28T11:51:55.256964",
                    "syncVersion": 0
                }
            ]
        }
    },
    mounted(){
        this.tableData.forEach((item,index) => {
            console.log(item,'itemmmm');         

            // console.log(item['chain'] ,'chain对象');

            // console.log(item['chain'].chainName ,'chain对象下面的chainName 这样报错 看下面步骤');

            // console.log(item['chain'] && item['chain'].chainName ,'chain对象下面的chainName 这样就不报错了');


            console.log(item['chain'] && item['chain'].chainName ? item['chain'].chainName : '' , '这种最全面,取里面的chainName的值');

        })
    }
}
script>
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效果

最后

感觉文章好的话记得点个心心和关注和收藏，有错的地方麻烦指正一下，如果需要转载,请标明出处，多谢！！！