473,573 Members | 3,265 Online
Bytes | Software Development & Data Engineering Community
+ Post

Home Posts Topics Members FAQ

Return selectionStart for div?

I need to find a way to determine the character position of a users
selection in a div. I can do this with the following using an input
text box. Any way for a div or any text within the body tags?

<div onkeyup="s(this )" onclick="s(this )" id="myDiv">Thi s is some
<input type="text" onkeyup="s(this )" onclick="s(this )" value="This is
some text">
<script type="text/javascript">
function s(el)
var sel, rng, r2, i=-1;

if(typeof el.selectionSta rt=="number")
i=el.selectionS tart;
else if(document.sel ection && el.createTextRa nge)
sel=document.se lection;
r2=sel.createRa nge();
rng=el.createTe xtRange();
rng.setEndPoint ("EndToStart ", r2);
i=rng.text.leng th;
el.onkeyup=null ;
el.onclick=null ;

Jul 23 '05 #1
1 18986
je*********@hot mail.com wrote:
I need to find a way to determine the character position of a users
selection in a div.

The following should demonstrate some methods you can use with ranges;
tested IE6 and Mozilla 1.7.
onmouseup="aler t(getCharPositi on(this));"
onmousedown="pr epare(this)">He llo, World</div>

<script type="text/javascript">
var getCharPosition =(function(){

function getSel(){
var sel=null;
typeof document.select ion!="undefined " &&
document.select ion &&
document.select ion.type=="Text "
sel=document.se lection;
} else if(
window.getSelec tion &&
window.getSelec tion().rangeCou nt>0
sel=window.getS election();
return sel;

function createRangeFrom Sel(sel){
var rng=null;
if(sel.createRa nge) {
rng=sel.createR ange();
} else if(sel.getRange At) {
rng=sel.getRang eAt(0);
if(rng.toString ()=="") rng=null;
return rng;

return function(el){
var sel=getSel(), rng, r2, i=-1;
rng=createRange FromSel(sel);

if(rng.parentEl ement) {
if(rng.parentEl ement()==el){
r2=document.bod y.createTextRan ge();
r2.moveToElemen tText(el);
r2.collapse(tru e);
r2.setEndPoint( "EndToStart ", rng);
i=r2.text.lengt h;
} else {
rng.startContai ner &&
rng.endContaine r &&
rng.startContai ner==rng.endCon tainer &&
rng.startContai ner==rng.common AncestorContain er &&
rng.commonAnces torContainer.pa rentNode==el

//make sure your DIV does not have any inner element,
//otherwise more code is required in order to filter
//text nodes and count chars

i=rng.startOffs et;
return i;


function prepare(el){
if(el.normalize ) {
Jul 23 '05 #2

This thread has been closed and replies have been disabled. Please start a new discussion.

Similar topics

by: DraguVaso | last post by:
Hi, For my VB.NET-application I want to indicate in a label the SelectionStart and the SelectionLength when the user selects some text in a Cell in a DataGrid. Does anybody knows in which event I can trap this, and how I can know those two values? Thanks a lot in advance,
by: snoopy | last post by:
Hi, Previously I have this code working in FF 0.9 in a web forum : bodytext = (document.all) ? document.selection.createRange().text:document.getSelection(); if (selectedtext.createTextRange) { selectedtext.caretPos = document.selection.createRange().duplicate(); } else if (document.postform.body.setSelectionRange){ bodytext =
by: PengYu.UT | last post by:
I have the following sample program, which can convert function object with 1 argument into function object with 2 arguments. It can also do + between function object of the same type. The last line is very long. I'm wondering if there is any way to suppress it. I can only think of typedef. But I'm not sure whether I can use typedef for the...
by: John S | last post by:
I have an event handler tied to a text box keypress event. All I am trying to do is have it read the key and return it in upper case. Because the event doesn't return anything, I cannot use the keyword "return". I thought I could do it this way. Here is the code. public static void uCaseReturn(object sender,...
by: Gary Shell | last post by:
I have a very ODD situation. I have a RichTextBox and a button. In the button click event I have the following: me.richtextbox1.SelectedText="test" Assuming I start with "aaaabbbbcccc" in the richtext box and I place the caret between the a and b and hit the button. I get "aaaatestbbbbcccc" as expected. Then I click between the b...
by: marfi95 | last post by:
Hi all, I am trying to change the color of text that the user sees when they are editing a richtextbox. This is the code I am using in the TextChanged method of RichTextBox control. Dim position As Integer = rtb.SelectionStart rtb.Refresh() rtb.SelectionStart = position
by: mosquito.dotnet | last post by:
I am getting clearly wrong values from TextBox.SelectionStart property in C# code. For example, if I move caret one character to right by pressing Keys.Right, sometimes declared SelectionStart property actually decreases, sometimes it does not change. Difference seems always at most off by 1 but it is very irritiating. My setup is as...
by: =?Utf-8?B?TWFyaw==?= | last post by:
Hello I've created a .NET 2.0 form and added 6 text boxes, 1 combo box and 2 button controls. The combo box has a DropDownStyle of DropDown, so the user can still type in the combo box. The combo box has the follows values in it's drop down list: "Dear Sir,"
by: nicebasic | last post by:
I have used "msdxm.ocx" to embed Windows Media Player in my VB Projects. When I decided to use "wmp.dll" to embed newer version of Windows Media Player in my projects, I noticed some differences between these two objects. I realized that "wmp.dll" seems to lack "SelectionStart" and "SelectionEnd" properties. These two properties are really...
by: marktang | last post by:
ONU (Optical Network Unit) is one of the key components for providing high-speed Internet services. Its primary function is to act as an endpoint device located at the user's premises. However, people are often confused as to whether an ONU can Work As a Router. In this blog post, we’ll explore What is ONU, What Is Router, ONU & Router’s main...
by: Oralloy | last post by:
Hello folks, I am unable to find appropriate documentation on the type promotion of bit-fields when using the generalised comparison operator "<=>". The problem is that using the GNU compilers, it seems that the internal comparison operator "<=>" tries to promote arguments from unsigned to signed. This is as boiled down as I can make it. ...
by: jinu1996 | last post by:
In today's digital age, having a compelling online presence is paramount for businesses aiming to thrive in a competitive landscape. At the heart of this digital strategy lies an intricately woven tapestry of website design and digital marketing. It's not merely about having a website; it's about crafting an immersive digital experience that...
by: agi2029 | last post by:
Let's talk about the concept of autonomous AI software engineers and no-code agents. These AIs are designed to manage the entire lifecycle of a software development project—planning, coding, testing, and deployment—without human intervention. Imagine an AI that can take a project description, break it down, write the code, debug it, and then...
by: isladogs | last post by:
The next Access Europe User Group meeting will be on Wednesday 1 May 2024 starting at 18:00 UK time (6PM UTC+1) and finishing by 19:30 (7.30PM). In this session, we are pleased to welcome a new presenter, Adolph Dupré who will be discussing some powerful techniques for using class modules. He will explain when you may want to use classes...
by: TSSRALBI | last post by:
Hello I'm a network technician in training and I need your help. I am currently learning how to create and manage the different types of VPNs and I have a question about LAN-to-LAN VPNs. The last exercise I practiced was to create a LAN-to-LAN VPN between two Pfsense firewalls, by using IPSEC protocols. I succeeded, with both firewalls in...
by: adsilva | last post by:
A Windows Forms form does not have the event Unload, like VB6. What one acts like?
by: 6302768590 | last post by:
Hai team i want code for transfer the data from one system to another through IP address by using C# our system has to for every 5mins then we have to update the data what the data is updated we have to send another system
by: bsmnconsultancy | last post by:
In today's digital era, a well-designed website is crucial for businesses looking to succeed. Whether you're a small business owner or a large corporation in Toronto, having a strong online presence can significantly impact your brand's success. BSMN Consultancy, a leader in Website Development in Toronto offers valuable insights into creating...

By using Bytes.com and it's services, you agree to our Privacy Policy and Terms of Use.

To disable or enable advertisements and analytics tracking please visit the manage ads & tracking page.