The Global object has properties and methods at the highest level, without a parent object. This means that global properties and functions can be used with all the built-in JavaScript objects.

• The Global object has three properties:
Global object methods (or functions):
- In the following example is a JS script that uses the method eval() twice, transform and interpret the argument received as a JavaScript code.
<script type="text/javascript"><!--
function calcs(form) { = eval(form.expr.value);
eval("alert('Have a good life!')");
 <p>Enter a mathematical expression (addition, subtraction, multiplication, division), for example (7*8 or 3+8/2): </p>
 <input type="text" name="expr" size="35" />
 <input type="button" name="calc" value="Calculation" onclick="calcs(this.form)" /><br />
 The result is:
 <input type="text" name="re" size="18">
- This code displays an alert window and then the following result. A form that you can use for simple math operations:

Enter a mathematical expression (addition, subtraction, multiplication, division), for example (7*8 or 3+8/2):

The result is:

Daily Test with Code Example

Which tag defines the clickable areas inside the image map?
<map> <img> <area>
<img src="image.jpg" usemap="#map1">
<map name="map1">
  <area shape="rect" coords="9, 120, 56, 149" href="#">
  <area shape="rect" coords="100, 200, 156, 249" href="#">
Which CSS property defines what is done if the content in a box is too big for its defined space?
display overflow position
#id {
  overflow: auto;
Click on the event which is triggered when the mouse is positioned over an object.
onclick onmouseover onmouseout
document.getElementById("id").onmouseover = function(){
  document.write("Have Good Life");
Indicate the PHP variable that contains data added in URL address after the "?" character.
if(isset($_GET["id"])) {
  echo $_GET["id"];
Global Object

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