I am trying to populate a table with a number that increments-CodePudding

I am attempting to keep track of how many times someone has flipped a coin and which side it was.

I do not understand how to get the number to increment itself nor get the table to get the row to populate with the div result appropriately. There is a space between the first instance and the second where it does not record heads or tails.

HTML

<button id="flip" type="button" onclick="addRow()">Flip the coin</button>
  <div id="result"></div>

  <table id="myTable">
    <tr>
      <th>Flips</th>
      <th>Results</th>
    </tr>
    <tr>
      
    </tr>
    <tr>
      
    </tr>
  </table>

Script for Coin Flip

let button = document.getElementById("flip");
let result = document.getElementById("result");

function fnClick(event) {
  let num = Math.random();

  if (num < 0.5) {
    result.innerHTML = "You got HEAD";
  } else {
    result.innerHTML = "You got TAIL";
  }
}

Script For New Row

function addRow() {
  var number = 0;

  for (var i = 0; i < 10000; i  ) {
    number  ;
    console.log(number);
  }
  var table = document.getElementById("myTable");
  var row = table.insertRow(0);
  var cell1 = row.insertCell(0);
  var cell2 = row.insertCell(1);
  cell1.innerHTML = i;
  cell2.innerHTML = result.innerHTML;
}
button.addEventListener("click", fnClick);

I would like to add a number to the left of my table progressively as the user clicks the coin flip as well as keep track of the results on the right side of the table. How do I do this?

CodePudding user response：

You can do something like this.

<table id="myTable">
    <th>
        <th>Flips</th>
        <th>Results</th>
    </th>
</table>

JS Code:

<script type="text/javascript">

    let button = document.getElementById("flip");
    let result = document.getElementById("result");

    function fnClick(event) {
        let num = Math.random();
        let side = "HEAD";

        if (num < 0.5) {
            result.innerHTML = "You got HEAD";
            side = "HEAD";
        } else {
            result.innerHTML = "You got TAIL";
            side = "TAIL";
        }

        addRow(num, side);
    }

    function addRow(num, side) {
        var table = document.getElementById("myTable");
        var row = table.insertRow(0);
        var cell1 = row.insertCell(0);
        var cell2 = row.insertCell(1);
        cell1.innerHTML = num;
        cell2.innerHTML = side;
    }
    button.addEventListener("click", fnClick);
</script>

CodePudding user response：

Update your addRow function like this and move the number variable outside to make it global

 var number = 0;
function addRow() {
  number  ;
  var table = document.getElementById("myTable");
  var row = table.insertRow(0);
  var cell1 = row.insertCell(0);
  var cell2 = row.insertCell(1);
  cell1.innerHTML = number;
  cell2.innerHTML = result.innerHTML;
}
button.addEventListener("click", fnClick);