js 删除数组重复元素

(function() {
var distin = {
numArray: function() {
var num = [], i = 0;
for (i; i < 10; i++) {
num.push(this.rand(10));
}
return num;
},
disp: function(array, title) {
if (!array) {
array = distin.numArray();
}
if (title) {
document.write("<br />" + title);
}
for (var i in array) {
document.write("  [ " + array[i] + " ]  ");
}
},
rand: function(param) {
return Math.ceil(Math.random() * param);
},
find: function(array) {
for (var i = 0; i < array.length; i++) {
if (array[i] === array[i + 1]) {
array.splice(i, 1);
i--;
}
}
return array;
},
sortNum: function(a, b) {
return a - b;
},
dispSort: function() {
var array = this.numArray().sort(this.sortNum);
this.disp(array);
},
run: function() {
var array = this.numArray();
this.disp(array, "BEGIN: ");
array.sort(this.sortNum);
this.disp(array, "SORT: ")
this.find(array);
this.disp(array, "RESULT: ")
}
}
window.distin = distin;
})();
distin.run();