SOURCE

console 命令行工具 X clear

                    
>
console
 function reset1() {
                  $("#neirong,#neirong1").val("");
                }

                function removeD() {

                  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");

                }
<script src="//cdn.bootcss.com/jquery/1.9.1/jquery.min.js">
</script>
<link href="//cdn.bootcss.com/bootstrap/3.3.4/css/bootstrap.min.css" rel="stylesheet">
<script src="//cdn.bootcss.com/bootstrap/3.3.4/js/bootstrap.min.js">
</script>
<link href="//cdn.bootcss.com/layer/3.0.1/skin/default/layer.min.css"
rel="stylesheet">
<body>
  <div class="aw-container-wrap">
    <div class="container">
      <div class="row">
        <div class="aw-content-wrap clearfix">
          <div class=" aw-main-content" style="min-height:700px;max-height:2000px">  
            <div class="panel panel-default">
              <div class="panel-heading">
                <div class="media">
                  <div class="media-body">
                    <h4 class="media-heading">
                      在线去除重复字符串
                    </h4> 
                  </div>
                </div>
              </div>
              <div class="panel-body">
                <div style="width: 100%;">
                  <div style="width: 46%;">
                    <span>
                      源内容
                    </span>
                    <textarea id="neirong" name="RawJson" class="json_input" rows="20" spellcheck="false"
                    placeholder="源内容"></textarea>
                  </div>
                  <div style="margin-top:20px;float:left;">
                    <p>
                      <button id="tojson" onClick="removeD()">
                        去除重复
                      </button>
                    </p>
                    <p>
                      <button id="reset" onClick="reset1();">
                        清空内容
                      </button>
                    </p>
                  </div>
                  <div style="width: 46%;">
                    <span>
                      去除重复后的
                    </span>
                    <textarea id="neirong1" name="RawJson" class="json_input" rows="20" spellcheck="false"
                    placeholder="去除重复后的"></textarea>
                  </div>
                </div>
              </div> 
              <div class="panel-footer" id="Canvas">
              </div>
            </div>
            <script src="https://cdn.bootcss.com/layer/3.0.1/layer.min.js">
            </script>
          </div>
        </div>
      </div>
    </div>
  </div> 
.a2016{ color: white; font-family:"Microsoft YaHei",微软雅黑,"MicrosoftJhengHei",华文细黑,STHeiti,MingLiu
              ; text-align: center; background: red; border-radius: 2px; } .touxiang{
              height: 20px; line-height: 45px; }.panel-body div{float:left;text-align: center;} .panel-body textarea{width:100%;border-radius:
              4px;} .panel-body button{margin:5px;}