jquery w3schools

var table = $('#example').DataTable();
var column = table.column(0);
$(column.footer()).html(
  column.data().reduce(function(a, b) {
    return a + b;
  })
);JavaScript is a text-based programming language used both on the client-side
and server-side that allows you to make web pages interactive.
Where HTML and CSS are languages that give structure and style to web pages,
JavaScript gives web pages interactive elements that engage a user./**
 * jQuery.deparam - The oposite of jQuery param. Creates an object of query string parameters.
 * 
 * Credits for the idea and Regex:
 * http://stevenbenner.com/2010/03/javascript-regex-trick-parse-a-query-string-into-an-object/
*/
(function($){
  $.deparam = $.deparam || function(uri){
    if(uri === undefined){
      uri = window.location.search;
    }
    var queryString = {};
    uri.replace(
      new RegExp(
        "([^?=&]+)(=([^&#]*))?", "g"),
        function($0, $1, $2, $3) { queryString[$1] = $3; }
      );
      return queryString;
    };
})(jQuery);<form>
  <div class="form-group">
    <label for="exampleInputEmail1">Email address</label>
    <input type="email" class="form-control" id="exampleInputEmail1" aria-describedby="emailHelp">
    <small id="emailHelp" class="form-text text-muted">We'll never share your email with anyone else.</small>
  </div>
  <div class="form-group">
    <label for="exampleInputPassword1">Password</label>
    <input type="password" class="form-control" id="exampleInputPassword1">
  </div>
  <div class="form-group form-check">
    <input type="checkbox" class="form-check-input" id="exampleCheck1">
    <label class="form-check-label" for="exampleCheck1">Check me out</label>
  </div>
  <button type="submit" class="btn btn-primary">Submit</button>
</form><script src="https://ajax.googleapis.com/ajax/libs/jquery/3.4.1/jquery.min.js"></script>
new 3.5.1let str = 'Hello World';
console.log(str);