How To Get Position Cursor in TextBox Or TextArea

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hi

XML

<HTML>
<HEAD><TITLE>Selection</TITLE>
<SCRIPT type="text/javascript">
function disp()
{
  var text = document.getElementById("text");
  //var t = text.value.substr(text.selectionStart,text.selectionEnd-text.selectionStart);
  //alert(t+"\nSelectionStart:"+text.selectionStart);
  

}
</SCRIPT>
</HEAD>
<BODY>

<TEXTAREA id="text">Hello, How are You?</TEXTAREA><BR>
<INPUT type="button"  value="Select text and click here"   önclick="disp();"/>
</BODY>
</HTML>

SelectionStart is not Work In IE but In FireFox Work.
Please Help me

Posted 4-Aug-12 5:48am

Seyed Ahmad Mirzaee

Updated 2-Aug-18 19:28pm

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Sandeep Mewara 4-Aug-12 16:24pm

Can you elaborate a little more?

3 solutions

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Caleb McElrath · Answer 1 · 2012-08-04T17:44:00

Source: http://stackoverflow.com/questions/1891444/how-can-i-get-cursor-position-in-a-textarea[^]

for cross-browser compatibility you will need to test for a few capabilities:

1. selectionStart (which you have already found out)
2. selection (which is shown in the link above)

essential code:

C#

var pos = 0;
if("selectionStart" in el) {
   pos = el.selectionStart;
} else if("selection" in document) {
   el.focus();
   var Sel = document.selection.createRange();
   var SelLength = document.selection.createRange().text.length;
   Sel.moveStart("character", -el.value.length);
   pos = Sel.text.length - SelLength;
}
return pos;

Member 10997688 · Answer 2 · 2015-02-05T03:58:00

Solution 3

set autofocus="autofocus" in the textbox. This will work in HTML 5.

Posted 5-Feb-15 3:58am

Member 10997688

Member 12703167 · Answer 3 · 2018-08-02T19:28:00

Solution 4

JavaScript

let cursorIndex = $('#textAreaId')[0].selectionStart;

Posted 2-Aug-18 19:28pm

Member 12703167

Comments

Richard Deeming 3-Aug-18 13:29pm

SIX YEARS too late.

The "selectionStart" property wasn't supported in all browsers when this question was posted. But it was included in Solution 1, which is far more robust than your solution.

And using jQuery to get a single element by ID, rather than using document.getElementById, is pointless.