Change asp.net checkbox text using checkbox id in JavaScript

Lets first check how a check box is getting rendered in asp.net page. Lets have the following HTML-

<asp:CheckBox ID="chkAll" runat="server" Text="All" />

The above control is getting rendered like-

<input id="ContentPlaceHolder1_chkAll" type="checkbox" name="ctl00$ContentPlaceHolder1$chkAll" />
<label for="ContentPlaceHolder1_chkAll">All</label>

Now to change the text for the check box is nothing but changing the innerHTML of the rendered label. We can do this change by-

<script type="text/javascript">
    function changeLabel(checkboxID, text) {
    debugger;
        var allLabel = document.getElementsByTagName("label");
        for (i = 0; i < allLabel.length; i++) {
            
            if (allLabel[i].htmlFor == checkboxID) {
                allLabel[i].innerHTML = text;
                break;
            }
        }
    }
    changeLabel('<%=chkAll.ClientID %>', "new text");
</script> 

Using jQuery it much more simple-

$("label[for=<%=chkAll.ClientID %>]").html(new text);