js去除重复字符串两种实现方法

方法一:

  

复制代码 代码如下:

  function checkRe(checkid) {

  var id = window.parent.getQry("ctrid") + "_";

  var values = window.parent.opener.document.getElementById(id + "txt_dept_name").value;

  var keys = window.parent.opener.document.getElementById(id + "hf_ids").value;

  var ary = checkid.value.split("|");

  var newsValues = ary[0];

  var newsKeys = ary[1];

  if (checkid.checked) {

  values = values + "," + newsValues;

  keys = keys + "," + newsKeys;

  }

  else {

  values = values.replace(new RegExp("," + newsValues), "");

  keys = values.replace(new RegExp("," + newsKeys), "");

  }

  values = okd(values);

  keys = okd(keys);

  window.parent.opener.document.getElementById(id + "txt_dept_name").value = values;

  window.parent.opener.document.getElementById(id + "hf_ids").value = keys;

  return;

  }

  //转换成数组,去掉重复,再组合好。

  function okd(str) {

  var ary = str.split(",");

  // 去重的算法

  var json = {};

  for (var i = 0; i < ary.length; i++) {

  if (ary[i] != "") {

  json["a" + ary[i]] = ary[i];

  }

  }

  // 查看结果

  var str2 = "";

  for (var key in json) {

  str2 += "," + json[key];

  }

  var s = str2.toString();

  //去掉第一个逗号

  if (s.substr(0, 1) == ',') {

  s = s.substr(1);

  }

  return s;

  }

  function add_all() {

  var ck = document.getElementsByTagName("input");

  for (i = 0; i < ck.length; i++) {

  if (ck[i].type == "checkbox") {

  ck[i].checked = true;

  checkRe(ck[i]);

  }

  }

  }

  function del_all() {

  var id = window.parent.getQry("ctrid") + "_";

  window.parent.opener.document.getElementById(id + "txt_dept_name").value = "";

  window.parent.opener.document.getElementById(id + "hf_ids").value = "";

  var ck = document.getElementsByTagName("input");

  for (i = 0; i < ck.length; i++) {

  if (ck[i].type == "checkbox") {

  ck[i].checked = false;

  }

  }

  }

  

复制代码 代码如下:

  <input id='chk_pkId' type='checkbox' name='chk' onclick='checkRe(this);' value='值|pkId' />

  方法二:

  

复制代码 代码如下:

  function filterRepeatStr(str){

  var ar2 = str.split(",");

  var array = new Array();

  var j=0

  for(var i=0;i<ar2.length;i++){

  if((array == "" || array.toString().match(new RegExp(ar2[i],"g")) == null)&&ar2[i]!=""){

  array[j] =ar2[i];

  array.sort();

  j++;

  }

  }

  return array.toString();

  }