jquery toggle button value

Question

In the below code when the play button is clicked Its value should be changed to pause and when pause is clicked the other function should be called .How to do this using jq

Answer 1

A simplest idea can be this

function play(action) {
 { 
   if(action=='play') { 
      play_int(); 
      $("#btn_play").val('pause');
   }
   else { 
      pause_int(); 
      $("#btn_play").val('play');
   }
}

$("#btn_play").click(function() {
   val = $(this).val();
   play(val);
}