javascript 數組去重複(線上去重工具)_javascript技巧

線上文本去重複工具

第一種方法：

<textarea id="list" class="toolarea">雲棲社區www.jb51.netwww.baidu.comwww.jb51.net雲棲社區shouce.jb51.netwww.jb51.nettools.jb51.netwww.baidu.comshouce.jb51.nettools.jb51.net雲棲社區www.jb51.net</textarea><input type="button" onclick="process()" value="去重處理" 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("處理完成！");}</script>

第二種方法

 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"); }