HTML DOM writeln() Method

HTMLWeb DevelopmentFront End Technology

The HTML DOM writeln() provides user the functionality to write multiple expressions (HTML or JavaScript) directly to a document.

NOTE − This method overwrites HTML code in a document if any and does appends arguments to a new line.

Syntax

Following is the syntax −

document.write(agruments)

Example

Let us see an example of HTML DOM document writeln() method −

<!DOCTYPE html>
<html>
<head>
<title>HTML DOM writeln()</title>
<style>
   * {
      padding: 2px;
      margin:5px;
   }
   form {
      width:70%;
      margin: 0 auto;
      text-align: center;
   }
   input[type="button"] {
      border-radius: 10px;
</style>
</head>
<body>
   <form>
      <fieldset>
         <legend>HTML-DOM-writeln( )</legend>
         <input id="urlSelect" type="url" placeholder="Type URL here..."><br>
         <input id="textSelect" type="text" placeholder="Full Name"><br>
         <input type="button" value="Go To" onclick="openWindow()">
         <input type="button" value="Close" onclick="closeWindow()">
         <input type="button" value="Restore" onclick="restoreWindow()">
         <div id="divDisplay"></div>
      </fieldset>
   </form>
   <script>
      var urlSelect = document.getElementById("urlSelect");
      var textSelect = document.getElementById("textSelect");
      var winSource;
      function openWindow() {
         browseWindow = window.open(urlSelect.value, "browseWindow", "width=400, height=200");
         winSource = urlSelect.value;
         browseWindow.opener.document.getElementById("divDisplay").textContent = "Child
         Window Active";
         if(textSelect.value !== 'admin')
            browseWindow.document.writeln("<p><strong>Unauthorized User:
            </strong></p>","<p>"+textSelect.value+"</p>");
      }
      function closeWindow(){
         if(browseWindow){
            browseWindow.close();
            browseWindow.opener.document.getElementById("divDisplay").textContent = "Child
            Window Closed";
         }
      }
      function restoreWindow(){
         if(browseWindow.closed){
            browseWindow = window.open(winSource, "browseWindow", "width=400, height=200");
            browseWindow.opener.document.getElementById("divDisplay").textContent = "Child
            Window Restored";
         }
      }
   </script>
</body>
</html>

Output

Clicking ‘Go To’ button with unauthorized Full Name set −

Clicking ‘Go To’ button with authorized Full Name set −

raja
Published on 31-Oct-2019 11:55:23
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