document.addEventListener("resume", yourCallbackFunctionResume, false);
function yourCallbackFunctionResume()
{
document.removeEventListener("resume", function(){});
alert("Resume off");
}
still using alert again and again when application resumes.WHY?
you can use the removeEventListener() call.
document.removeEventListener("resume", yourCallbackFunction);
Edit 1:
Your need to change your code as shown below.
function yourCallbackFunctionResume()
{
document.removeEventListener("resume", yourCallbackFunctionResume);
alert("Resume off");
}