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16.3 Web History API
- The Web History API provides easy methods to access the windows.history object.
- The window.history object contains the URLs (Web Sites) visited by the user.
The Web History API is supported in all browsers:
 |
 |
 |
 |
 |
|---|---|---|---|---|
| Yes | Yes | Yes | Yes | Yes |
The History back() Method
- The back() method loads the previous URL in the windows.history list.
- It is the same as clicking the "back arrow" in your browser.
Example
<button onclick="myFunction()">Go Back</button>
<script>
function myFunction() {
window.history.back();
}
</script>
The History go() Method
The go() method loads a specific URL from the history list:
Example
<button onclick="myFunction()">Go Back 2 Pages</button>
<script>
function myFunction() {
window.history.go(-2);
}
</script>
History Object Properties
| Property | Description |
|---|---|
| length | Returns the number of URLs in the history list |
History Object Methods
| Method | Description |
|---|---|
| back() | Loads the previous URL in the history list |
| forward() | Loads the next URL in the history list |
| go() | Loads a specific URL from the history list |
Navigate this module
Eventually the navigation links, above, will be replaced by these (previous) and (next) buttons below.
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