Whenever you open a tab in the browser automatically create a window object. Window objects are not JavaScript objects. JavaScript objects are strings, arrays, dates, etc.
JavaScript Window is a global Interface (object type) that is used to control the browser window lifecycle and perform various operations on it.
The important methods of window objects are as follows:
| Method | Description |
|---|---|
| alert() | displays the alert box containing a message with the ok button. |
| confirm() | displays the confirm dialog box containing a message with the ok and cancel button. |
| prompt() | displays a dialog box to get input from the user. |
| open() | opens the new window. |
| close() | closes the current window. |
| setTimeout() | performs an action after a specified time like calling function, evaluating expressions, etc. |
JavaScript window objects example
Simple example code using window object alert() method with confirm() method.
<!DOCTYPE html>
<html>
<body>
<script>
function show(){
var v = confirm("Do you want DELETE?");
if(v == true){
alert("ok");
}
else{
alert("cancel");
}
}
</script>
<input type="button" value="Delete Record" onclick="show()"/>
</body>
</html>Output:
confirm()
<body>
<script>
function msg(){
var v= confirm("Are u sure?");
if(v==true){
alert("ok");
}
else{
alert("cancel");
}
}
</script>
<input type="button" value="delete record" onclick="msg()"/>
</body>prompt()
<body>
<script>
function msg(){
var v= prompt("Who are you?");
alert("I am "+v);
}
</script>
<input type="button" value="click" onclick="msg()"/>
</body>open()
<body>
<script>
function msg(){
open("https://tutorial.eyehunts.com/");
}
</script>
<input type="button" value="javatpoint" onclick="msg()"/>
</body>setTimeout()
<body>
<script>
function msg(){
setTimeout(
function(){
alert("Welcome to Javatpoint after 2 seconds")
},2000);
}
</script>
<input type="button" value="click" onclick="msg()"/>
</body>Comment if you have any doubts or suggestions on this JS window topic.
Note: The All JS Examples codes are tested on the Firefox browser and the Chrome browser.
OS: Windows 10
Code: HTML 5 Version