JavaScript更新对象属性值

Question

我正在尝试更新对象属性：

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新对象将如下更新。

   data : [
     {"id":1,"rp":"2426","cr":"11-11"},
     {"id":1,"rp":"1119","cr":"19-21"},
     {"id":1,"rp":"3453","cr":"23-81"}
    ]

我希望更新所有值的对象cr属性，例如使用javascript.replace（）方法，我会执行replace（“-”，“ /”）。

Answer 1

这只是.as-console-wrapper { max-height: 100% !important; top: 0; }和Array#map的简单用法：

ES2018

String#replace

Answer 2

您可以迭代并映射数组。

for (var y = 0; y < x[i].name.length; y++) {
    table.innerHTML += '<th>' + x[storeFor].name[y] + '</th>';
}
// remove the for loop here; not sure why you are checking the length here; the age is a number and hence .length property will not work for number
table2.innerHTML += '<th>' + x[storeFor].age + '</th>';
for (var o = 0; o < x[i].intrests.length; o++) {
    table3.innerHTML += '<th>' + x[storeFor].intrests[o] + '</th>';
}

var data = [{ id: 1, rp: "2426", cr: "11-11" }, { id: 1, rp: "1119", cr: "19-21" }, { id: 1, rp: "3453", cr: "23-81" }],
    newArray = data.map(o => Object.assign({}, o, { cr: o.cr.replace("-","/") }));

console.log(newArray);

Answer 3

您可以使用const data = [{"id":1,"rp":"2426","cr":"11-11"},{"id":1,"rp":"1119","cr":"19-21"},{"id":1,"rp":"3453","cr":"23-81"}] const r = data.map(({ cr, ...rest }) => ({ cr: cr.replace('-', '/'), ...rest })); console.log(r);方法创建新数组，并使用map更新replace属性。

cr

Answer 4

尝试一下：

const data = [
  {"id":1,"rp":"2426","cr":"11-11"},
  {"id":1,"rp":"1119","cr":"19-21"},
  {"id":1,"rp":"3453","cr":"23-81"}
];

const newData = data.map(item => ({...item, cr: item.cr.replace(/-/g, '/')}));

console.log(newData);

如果您需要它在IE11中工作：

const data = [
  {"id":1,"rp":"2426","cr":"11-11"},
  {"id":1,"rp":"1119","cr":"19-21"},
  {"id":1,"rp":"3453","cr":"23-81"}
];

const newData = data.map(
  function(item) {
    return {
      id: item.id,
      rp: item.rp,
      cr: item.cr.replace(/-/g, '/')
    }
  }
);

console.log(newData);

Answer 5

您可以尝试

let data = [
     {"id":1,"rp":"2426","cr":"11-11"},
     {"id":1,"rp":"1119","cr":"19-21"},
     {"id":1,"rp":"3453","cr":"23-81"}
    ];
    
    
let newData = data.map(e=>{
  e.cr = e.cr.replace(/-/, '/')
  return e
})

console.log(newData)

Answer 6

只需尝试以下

data.forEach(function(object){
    object["cr"] = object["cr"].replace("-","/");
});

Answer 7

const data = [{"id":1,"rp":"2426","cr":"11-11"},{"id":1,"rp":"1119","cr":"19-21"},{"id":1,"rp":"3453","cr":"23-81"}]

const r = JSON.parse(JSON.stringify(data).replace(/-/g,'/'))
console.log(r);