How to convert “20” to number in javascript?

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what is the difference between wrappers and primitives es: diff between int i=200 in primitives and integeri = new integer(54)

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i want to display time using hidden variable in a page,but when i click button that page that hidden variable loosing its value.i m sending the code also. <script type="text/javascript" language="javascript"> var tick=0; window.onload = function() { //debugger if(document.getElementById("hdnTicker").value != "") tick = parseInt(document.getElementById("hdnTicker").value); setInterval("Timer()",1000); } function Timer() { //debugger document.getElementById("hdnTicker").value = tick++; //alert(document.getElementById("hdnTicker").value); document.getElementById("lblTimeSpent").innerHTML = "0." + tick; if(tick == 30) { //message or redirect to result window alert('time is out'); //clearTimeout(); } } </script> <form id="form1" runat="server"> <div> <table> <tr> <td> <asp:Label ID="lblTimeSpent" runat="server" Visible="true" ForeColor="Blue" ></asp:Label> </td> <td> <%-- <asp:textbox EnableViewState="true" id="hdnTicker" runat="Server" style="visibility:hidden"></asp:textbox>--%> </td> </tr> <tr> <td> <asp:Button ID="btn" runat="server" Text="hi" OnClick="btn_Click" Height="30px" Width="60px" /> </td> </tr> </table> <%--<asp:HiddenField ID="txt" runat="server" Visible="true" />--%> </div> </form> <input type="hidden" id="hdnTicker" name="hdnTicker" enableviewstate="true" runat="server" />

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what is difference between client side scripting and server side scripting?

6 Answers   IBM, NIIT,

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How much does a javascript developer make?

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What is call(), apply(), and bind()?

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how to post the form without submit button with help of javascript

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why jsp

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Is javascript safe to download?

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What is argument objects in javascript?

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Explain the working of timers in javascript?

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What is an example of javascript?

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