| Excerpt |
|---|
XMLHttpRequest() enables you to check file availability by its methods: open, send and status. |
Below is the simple code to check the availability of the file on the internet.
| Code Block |
|---|
file_exists = function(url)
{
var http = new XMLHttpRequest();
http.open('HEAD', url, false);
http.send();
return http.status!=404;
} |