我有一个包含对象电子邮件和 ID 的数组,所以我想删除具有相似 ID 的重复元素.
I have array with obejcts email and Id so I want delete duplicate elements who have similar ID's.
例子:
var newarray=[
{
Email:"test1@gmail.com",
ID:"A"
},
{
Email:"test2@gmail.com",
ID:"B"
},
{
Email:"test3@gmail.com",
ID:"A"
},
{
Email:"test4@gmail.com",
ID:"C"
},
{
Email:"test4@gmail.com",
ID:"C"
}
];
现在我需要删除具有 ID 的重复元素很常见.因此我期望最终的数组是
Now I need to delete Duplicate elements which have ID's are common.In the sence I am expecting final Array is
var FinalArray=[
{
Email:"test1@gmail.com",
ID:"A"
},
{
Email:"test2@gmail.com",
ID:"B"
},
{
Email:"test5@gmail.com",
ID:"C"
}
];
使用 Array.prototype.filter 过滤掉元素并检查重复项,使用 temp
数组
Use Array.prototype.filter to filter out the elements and to keep a check of duplicates use a temp
array
var newarray = [{
Email: "test1@gmail.com",
ID: "A"
}, {
Email: "test2@gmail.com",
ID: "B"
}, {
Email: "test3@gmail.com",
ID: "A"
}, {
Email: "test4@gmail.com",
ID: "C"
}, {
Email: "test5@gmail.com",
ID: "C"
}];
// Array to keep track of duplicates
var dups = [];
var arr = newarray.filter(function(el) {
// If it is not a duplicate, return true
if (dups.indexOf(el.ID) == -1) {
dups.push(el.ID);
return true;
}
return false;
});
console.log(arr);
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