find the length of string inside the div tag in javascript

[Wahid Najmy]

see I have done this:
I want to find the length of the string which is inside the div tag .

        <script>
            function show_hide()
            {
            var l = getElementById("text").length;
  
                alert(l);
          
            }
        </script>
       <div id="text"><p>I am the text which you want my length</p></div>

[Dormilich]

have a look at the error console (F12). It will list your issues.