CSS/option.html at main · Snowil-tuscano/CSS · GitHub

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<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
</head>
<body>
    <label for="iarr1">enter the elements of the array seprateed by cooma</label>
    <input type="text" maxlength="12"  id="a1">
     <br>
    <label for="iarr2">enter the elements of the array seprateed by cooma</label>
    <input type="text" maxlength="12"  id="a2">
    <br>
    <button onclick="fun()" style="width: fit-content;">enter for merge and remove duplicate</button>

    <script>
        var iarr1=document.getElementById("a1").value
        var iarr2=document.getElementById("a2").value
        var arr1 = iarr1.split(",")
        var arr1 = iarr1.split(",")
        var arr= arr1.concat(arr2)
        var newarr=[]
        function fun(){
          for(i=0;i<arr.length;i++){
            if(!newarr.includes(arr)){
                newarr.push(arr)
            }
          }
        }
        document.write(newarr)
    </script>

</body>
</html>