Displaying the user selected text

Question

 <script type="text/javascript">
        /* run on document load **/
        function disp() {
            //var text = document.getElementById('TextArea1').value;

            var text = document.getElementById('MainContent_TextArea1').value;
            //alert('a')

            if (text == null)
            {
                return false;
            } 
            else
            {
                var t = text;
          var t = text.substr(text.selectionStart, text.selectionEnd -text.selectionStart);
               document.getElementById('displayval').value = t;
                 alert(t)
                }
            }
  </script>
    <div>
    <input id="TextArea1" runat="server" type="text"/>
    <INPUT type="button" onclick= "disp()" visible="true" value="Show"/>
    <INPUT type="text"  id ="displayval" visible="true" />
    </div>

Here I am trying to display the Text which is selected by user. But unfortunately in var t = text.substr(text.selectionStart, text.selectionEnd -text.selectionStart); getting error. It is not working. Any wrong in this code. Please help me with correcting this..

score 1 · Accepted Answer · answered Mar 24 '16 at 05:08

1

<script type="text/javascript">
    function disp() {
        var txtArea = document.getElementById('TextArea1');
        var start = txtArea.selectionStart;
        var finish = txtArea.selectionEnd;
        var sel = txtArea.value.substring(start, finish);
        document.getElementById('displayval').value = sel;
        alert(sel);
    }
</script>
<div>
    <input id="TextArea1" runat="server" type="text"/>
    <input type="button" onclick= "disp()" visible="true" value="Show"/>
    <input type="text"  id ="displayval" visible="true" />
</div>

answered Mar 24 '16 at 05:08

Tim Biegeleisen

502,043
27
286
360

Hi Tim, My Tricky manager has changed the requirement again. Now He doesn't want to display it through alert. He wants to display the selected text in Text box which comes from c#. So we need to bind the selected text to text box. How can we do this. – kiran Mar 24 '16 at 06:58
Please open a new question and ask there. – Tim Biegeleisen Mar 24 '16 at 07:00

Displaying the user selected text

1 Answers1