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<title>Document</title>
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<script>
// 去重
var arr = [
{ name: '张三', id: 1, integral: 10 },
{ name: '李四', id: 2, integral: 20 },
{ name: '王五', id: 3, integral: 30 },
{ name: '赵六', id: 4, integral: 40 },
{ name: '王五', id: 3, integral: 10 },
{ name: '王五', id: 3, integral: 80 },
{ name: '赵六', id: 4, integral: 20 },
]
console.logarrayUnique2arr, 'id'), 'name')
/*
reducer 函数接收4个参数:
Accumulator acc) 累计器)
Current Value cur) 当前值)
Current Index index) 当前索引)
Source Array srcArray) 源数组)
*/
function arrayUnique2arr, name) {
var hash = {};
return arr.reducefunction acc, cru,index) {
if !hash[cru[name]]) {
hash[cru[name]] = {index:index}
acc.pushcru)
}else{
acc.splicehash[cru[name]]['index'],1,cru)
}
return acc;
}, []);
}
</script>
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