如何删除数组中的重复属性值-JavaScript？
假设以下是我们的数组-
var details = [
{
studentName: "John",
studentMarks: [78, 98]
},
{
studentName: "David",
studentMarks: [87, 87]
},
{
studentName: "Bob",
studentMarks: [48, 58]
},
{
studentName: "Sam",
studentMarks: [98, 98]
},
]我们需要删除重复的属性值，即上面重复了87。我们需要将其删除。
为此，请使用的概念map()。
示例
以下是代码-
var details = [
{
studentName: "John",
studentMarks: [78, 98]
},
{
studentName: "David",
studentMarks: [87, 87]
},
{
studentName: "Bob",
studentMarks: [48, 58]
},
{
studentName: "Sam",
studentMarks: [98, 98]
},
]
details.map(tempObj => {
if (typeof (tempObj.studentMarks) == 'object') {
tempObj.studentMarks = [... new Set(tempObj.studentMarks)]
if (tempObj.studentMarks.length == 1) {
tempObj.studentMarks = tempObj.studentMarks[0]
}
}
});
console.log(details);要运行上述程序，您需要使用以下命令-
node fileName.js.
在这里，我的文件名为demo292.js。
输出结果
这将在控制台上产生以下输出-
PS C:\Users\Amit\javascript-code> node demo292.js
[
{ studentName: 'John', studentMarks: [ 78, 98 ] },
{ studentName: 'David', studentMarks: 87 },
{ studentName: 'Bob', studentMarks: [ 48, 58 ] },
{ studentName: 'Sam', studentMarks: 98 }
]