How can I check if a checkbox is checked?

Question

I am building a mobile web app with jQuery Mobile and I want to check if a checkbox is checked. Here is my code.

Answer 1

Try this:

function validate() {
  var remember = document.getElementById("remember");
  if (remember.checked) {
    alert("checked");
  } else {
    alert("You didn't check it! Let me check it for you.");
  }
}

Your script doesn't know what the variable remember is. You need to get the element first using getElementById().