第一种:
function noRepeat(arr) {
var final = []
var ary = arr.sort();
for (var i = 0; i < ary.length; i++) {
if (ary[i] != ary[i + 1]) final.push(ary[i]);
}
return final;
}
第二种:
function noRepeat(arr) {
var final = []
var ary = arr.sort();
for (var i = 0; i < ary.length; i++) {
if (final.indexOf(ary[i]) == -1) final.push(ary[i]);
}
return final;
}
第三种:
var noRepArr =[...new Set(arr)]
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