javascript 数组去重复(在线去重工具)

第一种方法：

<textarea id="list" class="toolarea">三水点靠木
3water.com
www.baidu.com
3water.com
三水点靠木
shouce.3water.com
3water.com
tools.3water.com
www.baidu.com
shouce.3water.com
tools.3water.com
三水点靠木
3water.com</textarea>
<input type="button" onclick="process()" value="去重处理" class="bt-green">

<script type="text/javascript">
function unique(ary) {
 var i = 0,
  gid='_'+(+new Date)+Math.random(),
  objs = [],
  hash = {
   'string': {},
   'boolean': {},
   'number': {}
  }, p, l = ary.length,
  ret = [];
 for (; i < l; i++) {
  p = ary[i];
  if (p == null) continue;
  tp = typeof p;
  if (tp in hash) {
   if (!(p in hash[tp])) {
    hash[tp][p] = 1;
    ret.push(p);
   }
  } else {
   if (p[gid]) continue;
   p[gid]=1;
   objs.push(p);
   ret.push(p);
  }
 }
 for(i=0,l=objs.length;i<l;i++) {
  p=objs[i];
  p[gid]=undefined;
  delete p[gid];
 }
 return ret;
}

function process(){
 list = document.getElementById('list');
 arr = list.value.split('\n');
 arr = unique(arr);
 list.value = "";
 for(key in arr){
	 list.value += arr[key] + '\n';
 }
 alert("处理完成！");
}
</script>

第二种方法

function sx(){
  var rntArray=[],temp,hasValue;
  var array=document.getElementById("neirong").value.split("\n");
  for(var i in array){
   temp=array[i];
   hasValue=false;
   for(var j in rntArray){
    if(temp===rntArray[j]){
     hasValue=true;
     break;
    }
   }
   if(hasValue===false){
    rntArray.push(temp);
   }
  }
  document.getElementById("neirong1").value=rntArray.join("\n");
 }