Javascript how to split newline

Question

I\'m using jquery, and I have a textarea. When I submit by my button I will alert each text separated by newline. How to split my text when there is a newline?

Answer 1

1. Move the var ks = $('#keywords').val().split("\n"); inside the event handler
2. Use alert(ks[k]) instead of alert(k)

---

  (function($){
     $(document).ready(function(){
        $('#data').submit(function(e){
           e.preventDefault();
           var ks = $('#keywords').val().split("\n");
           alert(ks[0]);
           $.each(ks, function(k){
              alert(ks[k]);
           });
        });
     });
  })(jQuery);

Demo

Answer 2

Try initializing the ks variable inside your submit function.

  (function($){
     $(document).ready(function(){
        $('#data').submit(function(e){
           var ks = $('#keywords').val().split("\n");
           e.preventDefault();
           alert(ks[0]);
           $.each(ks, function(k){
              alert(k);
           });
        });
     });
  })(jQuery);

Answer 3

It should be

yadayada.val.split(/\n/)

you're passing in a literal string to the split command, not a regex.

Answer 4

Just

var ks = $('#keywords').val().split(/\r\n|\n|\r/);

will work perfectly.

Be sure \r\n is placed at the leading of the RegExp string, cause it will be tried first.

Answer 5

you don't need to pass any regular expression there. this works just fine..

 (function($) {
      $(document).ready(function() {
        $('#data').click(function(e) {
          e.preventDefault();
          $.each($("#keywords").val().split("\n"), function(e, element) {
            alert(element);
          });
        });
      });
    })(jQuery);

Answer 6

The problem is that when you initialize ks, the value hasn't been set.

You need to fetch the value when user submits the form. So you need to initialize the ks inside the callback function

(function($){
   $(document).ready(function(){
      $('#data').submit(function(e){
      //Here it will fetch the value of #keywords
         var ks = $('#keywords').val().split("\n");
         ...
      });
   });
})(jQuery);