javascript - Why won't my script update my div dynamically like it's supposed to? -

- 

<html> <head> <style type="text/css">     body {         background-color: #000000;         font-family: arial, helvetica, sans-serif;         font-size: 20px;         text-align: center;         color: #ffffff;     } </style> <script type="text/javascript" src="jquery-1.4.js"></script> <script type="text/javascript"> function sleep(ms) {     var dt = new date();     dt.settime(dt.gettime() + ms);     while (new date().gettime() < dt.gettime()); } function update() {     while (0 < 1) {<?php $contents = file_get_contents("my url here");      ?>         var count = <?php echo $contents ?>;         document.getelementbyid('div').innerhtml = count;         sleep(1500);     } } </script> </head> <body onload=update()> <iframe id="iframe" src="my url" style="visibility: hidden;"/> <table width=100% height=100%> <tr height=80%> <td width=100%> <center> <div id="div"></div> </center> </td> </tr> </table> </body> </html>

when viewing source code in-browser, var set correctly, won't set content of div. positive url php script pointing accurate , contains script grep number external page.

thanks in advance!

assuming value of file_get_contents("my url here") yields 42 (for example), aware you're creating infinite loop set content of #div 42 on , on again every 1.5 seconds? i.e., var count always, 42 , won't change, since php evaluated once on server.

furthermore suspect sleep function pose bit of problem, since creates tight loop. wouldn't surprised if script blocked browser without ever updating since it's caught in infinite loop. way delay execution in javascript use window.settimeout or window.setinterval.

i guess you're looking ajax solution of kind, if tell want do. since you're including jquery (without using it), should have @ jquery.get(), coupled setinterval update div periodically.

something like:

window.setinterval(function () {     $.get("my url here", function (data) {         $('#div').html(data);     }); }, 1500);

Comments

Post a Comment

Popular posts from this blog

c++ - How do I get a multi line tooltip in MFC -

-
right now, have tool tip pops when hover on edit box. problem tool tip contains multiple error messages , in 1 long line. need have each error message on own line. error messages contained in cstring new line seperating them. my existing code below. bool ontooltiptext(uint, nmhdr* pnmhdr, lresult* presult) { assert(pnmhdr->code == ttn_needtexta || pnmhdr->code == ttn_needtextw); // need handle both ansi , unicode versions of message tooltiptexta* pttta = (tooltiptexta*)pnmhdr; tooltiptextw* ptttw = (tooltiptextw*)pnmhdr; // tchar szfulltext[256]; cstring strtiptext=_t(""); uint nid = pnmhdr->idfrom; if (pnmhdr->code == ttn_needtexta && (pttta->uflags & ttf_idishwnd) || pnmhdr->code == ttn_needtextw && (ptttw->uflags & ttf_idishwnd)) { // idfrom hwnd of tool nid = ::getdlgctrlid((hwnd)nid); } //m_errprojaccel[ch] contains 1 or more error messages each...
Read more

asp.net - In javascript how to find the height and width -

-
i having .aspx , masterpage page. in masterpage loading aspx page . in aspx page design using generating table structure using code-behind server in javascript how find height , width . regards, kumar if you're looking table height , width, should it var tbl = document.getelementbyid('tbldemo'); alert(tbl.offsetwidth + '\n' + tbl.offsetheight);
Read more

c# - DataTable to EnumerableRowCollection -

-
i have datatable according client requirement can contain invalid date "00/00/1999",null,empty string.(typed datset) when collect them enumerables wish convert of invalid forms empty string. (i.e) enumerablerowcollection<datarow> query = order in _table.asenumerable() select new { orderdate= string.isnullorempty(convert.tostring(order.field<datetime>("orderdate")) || (how check date invalid date) ? string.empty : order.field<datetime>("orderdate") } how check whether date valid date or not? datetime.tryparse...like given current code: datetime date; enumerablerowcollection<datarow> query = order in _table.asenumerable() select new { orderdate= string.isnullorempty(convert.tostring(order.field<datetime>("orderdate")) || !datetime.tryparse(convert.tostring(order.field<datetime...
Read more