How to remove emoji code using javascript?

Question

How do I remove emoji code using JavaScript? I thought I had taken care of it using the code below, but I still have characters like

Answer 1

@bobince's solution didn't work for me. Either the Emojis stayed there or they were swapped by a different Emoji.

This solution did the trick for me:

var ranges = [
  '\ud83c[\udf00-\udfff]', // U+1F300 to U+1F3FF
  '\ud83d[\udc00-\ude4f]', // U+1F400 to U+1F64F
  '\ud83d[\ude80-\udeff]' // U+1F680 to U+1F6FF
];


$('#mybtn').on('click', function() {
  removeInvalidChars();
})

function removeInvalidChars() {
  var str = $('#myinput').val();

  str = str.replace(new RegExp(ranges.join('|'), 'g'), '');
  $("#myinput").val(str);
}

Source