hometrix

Assortment of useful JavaScript routines

Check for the Existence of a File

Uses an ajax function to check if a file exists. If the file is there, the function for success is processed. Any other failure causes the processing of the error function router.

Step 1

Create the script using the code that follows...

    function checkFile() {
      $.ajax({
       url: 'filename.tst',
       type: 'HEAD',
       success: function() { window.alert('file found') },
    // this routine processes if found
       error: function() { window.alert('file not found') } // this routine processes if there is an error
      });
    }

Step 2

Call the function from the within the HTML...

    <button onclick="checkFile()">Generate Page </button>

Check for the Existence of a File

Uses an ajax function to check if a file exists. If the file is there, the function for success is processed. Any other failure causes the processing of the error function router.

Step 1

Create the script using the code that follows...

    function checkFile() {
      $.ajax({
       url: 'filename.tst',
       type: 'HEAD',
       success: function() { window.alert('file found') },
    // this routine processes if found
       error: function() { window.alert('file not found') } // this routine processes if there is an error
      });
    }

Step 2

Call the function from the within the HTML...