- var ary=[1,2,3,3,2,3,4,5];
- for(var i=0;i<ary.length;i++){
- for(var j=i+1;j<ary.length;j++){
- if(ary[i]===ary[j]){
- ary.splice(i,1);
- i--;
- }
- }
- }
- alert(ary);
- var ary=[1,2,3,3,2,3,4,5];
- var ary1=[];
- for(var i=0;i<ary.length;i++){
- if(ary1.indexOf(ary[i])==-1){
- ary1.push(ary[i]);
- }
- }
- alert(ary1);
- var ary=[1,2,3,3,2,3,4,5];
- var obj={};
- for(var i=0;i<ary.length;i++){
- var cur=ary[i];
- if(obj[cur]){
- obj[cur]++;
- }else{
- obj[cur]=1;
- }
- }
- var ary=[];
- for(var attr in obj){
- ary.push(attr);
- }
- alert(ary);
- var ary = [1, 2, 3, 3, 2, 3, 4, 5];
- ary.sort(function(a, b) {
- return a - b;
- });
- for (var i = 0; i < ary.length; i++) {
- if (ary[i] === ary[i + 1]) {
- ary.splice(i, 1);
- i--;
- }
- }
- alert(ary);
来源: http://www.w3cfuns.com/notes/42231/be94f6921a24f86bd3dcedbe93ab75ef.html