How to call javascript function on page load in asp net

Question

Possible Duplicate    Javascript that executes after page load       i have application in asp net 4 0  i have javascript to display client zone offset into text box -     lt script type  text javascript  gt      function GetTimeZoneOffset             var d   new Date           var gmtOffSet   -d getTimezoneOffset            var gmtHours   Math floor gmtOffSet   60           var GMTMin   Math abs gmtOffSet   60           var dot                var retVal        gmtHours   dot   GMTMin          document getElementById   lt    offSet ClientID  gt    value   retVal          lt  script gt       Html MarkUp   lt asp HiddenField ID  clientDateTime  runat  server    gt   lt asp HiddenField ID  offSet  runat  server    gt   lt asp TextBox ID  TextBox1  runat  server  gt  lt  asp TextBox gt  lt  body gt    How can I call this function on page load so that I can display offset into textbox

User · Answer

lt html gt   lt head gt   lt script type  text javascript  gt  function GetTimeZoneOffset         var d   new Date       var gmtOffSet   -d getTimezoneOffset        var gmtHours   Math floor gmtOffSet   60       var GMTMin   Math abs gmtOffSet   60       var dot            var retVal        gmtHours   dot   GMTMin      document getElementById   lt    offSet ClientID  gt    value   retVal      lt  script gt   lt  head gt   lt body onload  GetTimeZoneOffset    gt       lt asp HiddenField ID  clientDateTime  runat  server    gt       lt asp HiddenField ID  offSet  runat  server    gt       lt asp TextBox ID  TextBox1  runat  server  gt  lt  asp TextBox gt   lt  body gt   lt  html gt    key point to notice here is body has an attribute onload  Just give it a function name and that function will be called on page load     Alternatively  you can also call the function on page load event like this    lt html gt   lt head gt   lt script type  text javascript  gt   window onload   load     function load         var d   new Date       var gmtOffSet   -d getTimezoneOffset        var gmtHours   Math floor gmtOffSet   60       var GMTMin   Math abs gmtOffSet   60       var dot            var retVal        gmtHours   dot   GMTMin      document getElementById   lt    offSet ClientID  gt    value   retVal      lt  script gt   lt  head gt   lt body  gt       lt asp HiddenField ID  clientDateTime  runat  server    gt       lt asp HiddenField ID  offSet  runat  server    gt       lt asp TextBox ID  TextBox1  runat  server  gt  lt  asp TextBox gt  lt  body gt   lt  body gt   lt  html gt

User · Answer

Calling JavaScript function on code behind i e  On Page Load  ClientScript RegisterStartupScript GetType     Javascript    javascript FUNCTIONNAME       true     If you have UpdatePanel there then try like this  ScriptManager RegisterStartupScript GetType     Javascript    javascript FUNCTIONNAME       true     View Blog Article   How to Call javascript function from code behind in asp net c

User · Answer

Place this line before the closing script tag writing from memory   window onload    GetTimeZoneOffset    i think the question is how to call the javascript function on pageload

User · Answer

use your code within      lt script type  text javascript  gt       function window onload                     var d   new Date           var gmtOffSet   -d getTimezoneOffset            var gmtHours   Math floor gmtOffSet   60           var GMTMin   Math abs gmtOffSet   60           var dot                var retVal        gmtHours   dot   GMTMin         document getElementById   lt    offSet ClientID  gt    value   retVal              lt  script gt

[javascript] How to call javascript function on page load in asp.net

Examples related to javascript

Examples related to asp.net