數組去除重覆的幾個方法 數組去除重覆的幾個方法 ...
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>數組去除重覆的幾個方法</title>
</head>
<body>
</body>
<script type="text/javascript">
//利用 ES6的set 方法
var arr = [1, 3, 5, 5, 7, 8, 7, 10, 10, 1 , 3];
console.log(Array.from(new Set(arr)));
//利用數組的indexOf下標屬性來查詢。
var Arr = [1,1,2,3,5,3,1,5,6,7,4];
function unique(arr){
var res = [];
for(var i=0; i<arr.length; i++){
if(res.indexOf(arr[i]) == -1){
res.push(arr[i]);
}
}
return res;
}
console.log(unique(Arr));
var array = [1,10,10,1];
var emp = function unique(arr){
var res = [];
var json = [];
for (var i = 0; i < this.length; i++) {
if(!json[this[i]]){
res.push(this[i]);
json[this[i]] = 1;
}
return res;
}
}
emp();
console.log(unique(arr));
</script>
</html><!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>數組去除重覆的幾個方法</title>
</head>
<body>
</body>
<script type="text/javascript">
//利用 ES6的set 方法
var arr = [1, 3, 5, 5, 7, 8, 7, 10, 10, 1 , 3];
console.log(Array.from(new Set(arr)));
//利用數組的indexOf下標屬性來查詢。
var Arr = [1,1,2,3,5,3,1,5,6,7,4];
function unique(arr){
var res = [];
for(var i=0; i<arr.length; i++){
if(res.indexOf(arr[i]) == -1){
res.push(arr[i]);
}
}
return res;
}
console.log(unique(Arr));
var array = [1,10,10,1];
var emp = function unique(arr){
var res = [];
var json = [];
for (var i = 0; i < this.length; i++) {
if(!json[this[i]]){
res.push(this[i]);
json[this[i]] = 1;
}
return res;
}
}
emp();
console.log(unique(arr));
</script>
</html>
