javascript - How to construct the code for the selection sort method -

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i'm having trouble constructing line(s) of code selection sort method.

under select() function sort random numbers outputted in id="demo" using selection method. i've tried think of code consist of in order so, after several failed attempts decided come here.

explicit code welcome :), explanation accompanied w/ code me conceptualize going on!

<input id="input1" type="number" min="10" max="100" onchange="first(); sortbutton();">  <p id="demo"></p>  <!-- button appears here, once value entered input field --> <p id="buttons1" onclick="select();"></p>   <p id="demo2"></p>  <script>   // once input1 value changes outputs random value less n (value of input1) n times, dumps out random numbers in id="demo"  var arr = [];  function first() { var n = document.getelementbyid("input1").value; while(arr.length < n)  {var randomnumber = math.ceil(math.random()*n); arr[arr.length] = randomnumber;} document.getelementbyid("demo").innerhtml = arr;}   // once input1 value changes, button appears in id="buttons1" function sortbutton() {document.getelementbyid("buttons1").innerhtml = '<button type="button" onclick="select();">select sort</button>';}    // meant sort (selection sort method) random numbers in id="demo" once button clicked function select() { }     </script>


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