Formunloadalert pattern.

Show a warning if the user leaves an unsaved form.

Configuration

Option	Type	Default	Description
changingEvents	string	"change keyup paste"	Events on which to check for changes (space-separated).
changingFields	string	"input,select,textarea,fileupload"	Fields on which to check for changes (comma-separated).
message	string	"Discard changes? If you click OK, any changes you have made will be lost."	Confirmation message to display when dirty form is being unloaded.

Examples

Example 1

value 1 value 2
Click here to go somewhere else

<form class="pat-formunloadalert" onsubmit="javascript:return false;">
    <input type="text" value="" />
    <select>
        <option value="1">value 1</option>
        <option value="2">value 2</option>
    </select>
    <input class="btn btn-large btn-primary" type="submit" value="Submit" />
    <br />
    <a href="/">Click here to go somewhere else</a>
</form>