how to code in javascript code example

Example 1: how to create js code

<!--just open a file with the ending of ".js"
example:  myFirstJS.js

an other option is to write this sentence on HTML document:
-->

<script type="text/javascript">
//write here your code
</script>

Example 2: javascript code

html>
<head>
  <title>Multiplication Table</title>
  <script type="text/javascript">
    var rows = prompt("How many rows for your multiplication table?");
    var cols = prompt("How many columns for your multiplication table?");
    if(rows == "" || rows == null)
   		 rows = 10;
    if(cols== "" || cols== null)
   		 cols = 10;
    createTable(rows, cols);
    function createTable(rows, cols)
    {
      var j=1;
      var output = "<table border='1' width='500' cellspacing='0'cellpadding='5'>";
      for(i=1;i<=rows;i++)
      {
    	output = output + "<tr>";
        while(j<=cols)
        {
  		  output = output + "<td>" + i*j + "</td>";
   		  j = j+1;

Example 3: how to code javascript

console.log("Hello World!");

Example 4: javascript learning

//checkout freecodecamp
https://www.freecodecamp.org/learn/javascript-algorithms-and-data-structures/basic-javascript/

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Javascript Example

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