etsted
-
Posts
274 -
Joined
-
Last visited
Content Type
Profiles
Forums
Events
Everything posted by etsted
-
it says Invalid argument supplied for foreach()
-
the function at the bottom is supposed to store both the value and name of the choosen argument, but only stores the name <body> <form action="hovedrett.php" method="post"> <select name="frett"> <option>rekkeplatte</option> <option>friske reker</option> </select> <br> <input type="submit" name="knapp" value="Neste"> </form> <?php $forrett = $_POST['frett']; function bevare($mat) { foreach($mat as $indeks => $verdi) { if( !strstr($indeks, "knapp")) { echo "<input type='hidden' name='$verdi' value='$indeks'> "; } // if } // foreach } bevare($forrett); ?></body>
-
this code generates unexpecteT_IF echo " <form> <select name='mnd'> <option value='jan'>jan</option> <option value='feb'>feb</option> <option value='mar'>mar</option> <option value='Apr' " . if($dagen_mnd == 'Apr'){echo "selected='selected'";} . ">Apr</option> </select> </form>";
-
i have a pagination script with ajax and php, but i doesnt show anything on the page, not even erros. ajax.pagination.php <?phpinclude_once("connect.php");// This first query is just to get the total count of rows$sql = "SELECT COUNT(id) FROM data";$query = mysqli_query($con, $sql) or die(mysqli_error());$row = mysqli_fetch_row($query);// Here we have the total row count$total_rows = $row[0];// Specify how many results per page$rpp = 10;// This tells us the page number of our last page$last = ceil($total_rows/$rpp);// This makes sure $last cannot be less than 1if($last < 1){ $last = 1; } // Close the database connection mysqli_close($con); ?> <!DOCTYPE html> <html> <head> <script> var rpp = <?php echo $rpp; ?>; // results per page var last = <?php echo $last; ?>; // last page number function request_page(pn) { var results_box = document.getElementById("results_box"); var pagination_controls = document.getElementById("pagination_controls"); results_box.innerHTML = "loading results ..."; var hr = new XMLHttpRequest(); hr.open("POST", "pagination_parser.php", true); hr.setRequestHeader("Content-type", "application/x-www-form-urlencoded"); hr.onreadystatechange = function() { if(hr.readyState == 4 && hr.status == 200) { var dataArray = hr.responseText.split("||"); var html_output = ""; for(i = 0; i < dataArray.length - 1; i++) { var itemArray = dataArray.split("|"); html_output += "ID: "+itemArray[0]+" - Testimonial from <b>"+itemArray[1]+"</b><hr>"; } results_box.innerHTML = html_output; } } hr.send("rpp="+rpp+"&last="+last+"&pn="+pn); // Change the pagination controls var paginationCtrls = ""; // Only if there is more than 1 page worth of results give the user pagination controls if(last != 1) { if (pn > 1) { paginationCtrls += '<button onclick="request_page('+(pn-1)+')"><</button>'; } paginationCtrls += ' <b>Page '+pn+' of '+last+'</b> '; if (pn != last) { paginationCtrls += '<button onclick="request_page('+(pn+1)+')">></button>'; } } pagination_controls.innerHTML = paginationCtrls; } </script> </head> <body> <div id="pagination_controls"></div> <div id="results_box"></div> <script> request_page(1); </script> </body> </html> pagination.parser.php <?php// Make the script run only if there is a page number posted to this scriptif(isset($_POST['pn'])) { $rpp = preg_replace('#[^0-9]#', '', $_POST['rpp']); $last = preg_replace('#[^0-9]#', '', $_POST['last']); $pn = preg_replace('#[^0-9]#', '', $_POST['pn']); // This makes sure the page number isn't below 1, or more than our $last page if ($pn < 1) { $pn = 1; } else if ($pn > $last) { $pn = $last; } // Connect to our database here include_once("connect.php"); // This sets the range of rows to query for the chosen $pn $limit = 'LIMIT ' .($pn - 1) * $rpp .',' .$rpp; // This is your query again, it is for grabbing just one page worth of rows by applying $limit $sql = "SELECT id, navn FROM data ORDER BY id DESC $limit"; $query = mysqli_query($con, $sql) or die(mysqli_error($con)); $dataString = ''; while($row = mysqli_fetch_array($query, MYSQLI_ASSOC)) { $id = $row["id"]; $navn = $row["navn"]; $dataString .= $id.'|'.$navn.'||'; } // Close your database connection mysqli_close($con); // Echo the results back to Ajax echo $dataString; exit(); } ?>
-
i was reading ajax in w3schools, and saw the example of callbacks functions, but i didnt get it. What does a callback function do. I tried searching a little but found no examples.
-
what does it mean by saying "when a cached file is not an option"?
-
in w3schools it says that i have to use POST when A cached file is not an option (update a file or database on the server). What does that mean?
-
targeting a class inside another class doesnt seem to work for me. .flip3D > .back{ position: absolute; color: #FC0; }
-
why arent the dashline supported? and where isnt it supported?
-
why cant i use the setlinedash function in canvas?
-
but u are supposed to use them With links
-
because they have the same first parameter "click". thescientist, i have updated the script, so that btn2 has a referance
-
what does it mean that i can back-reference the canvas element through the context object in this script? alert(ctx.canvas.id+" | "+ctx.canvas.width+" | "+ctx.canvas.height); in w3school they would only write "ctx.id".
-
But wont the double quotes keep it all together?
-
when i use the setTimeout function why do i have to use quotes around the first parameter when it is a function? <script> function renderTime() {var time = new Date();var h = time.getHours();var m = time.getMinutes();var s = time.getSeconds();var diem = "AM"; if( h == 0){ h = 12;} else if(h > 12){ h = h - 12;diem = "PM";} if(h < 10){h = "0" + h;} if(m < 10){m = "0" + m;} if(s < 10){s = "0" + s;} var clock = document.getElementById("displayClock");clock.innerText = h + ":" + m + ":" + s + " " + diem;clock.innerText = h + ":" + m + ":" + s + " " + diem;setTimeout(renderTime(),1000); }renderTime();</script>
-
This is my script: <!DOCTYPE html> <html> <head> <script type="text/javascript"> function addEventHandling(){ var btn1 = document.getElementById('btn1'); btn1.addEventListener('click', function(){btnClick("eggs","beef")}, true); btn2.addEventListener('click', function(){btnClick("grid","hest")}, false); function btnClick(arg1,arg2){ alert("This button click has "+arg1+" and "+arg2+" associated with it."); } } window.onload = addEventHandling; </script> </head> <body> <button id="btn1">I have food associated with me</button> <button id="btn2">I have food associated with me</button> </body> </html> and as i understod it, when i click on btn1, btn2 should trigger, but thats not the case. I have tried to use both false and true values as the third argument, but nothing special happens. They still run the same.
-
i have noticed this functions Third parameter, useCapture, and i dont understand it. Can someone explain what it actually does? Give examples.
-
$previous = ''; $paginationCtrls .= '<a href=" ' . $_SERVER['PHP_SELF']. '?pn=$previous">Previous</a>'; $paginationCtrls .= '<a href="$_SERVER['PHP_SELF']?pn=$previous">Previous</a>'; only the second code Works, becuase i have used single quote concatination, why doesnt the third line work?
-
i am trying to understand this code, my question is. Where does the 1 sign at the front of the output come from? When u output this, there is a number 1 at the front $myArray = array(500.00, 300.00, 200.00); $result = 2; foreach ($myArray as $key => $value) { $result = $result + $value; } $output = number_format($result, 2, '.', ','); echo "<h2>$". $output. "</h2>"; the result is: $1,000.00where does the 1 come from?
-
i am trying to get the chat_box to be display right under message_box. But i wont go any further up. <style type="text/css"> #mainDiv{ width: 700px; margin-top: -150px; } #mainDiv > #message_box{ width: 500px; height: 400px; background-color: green; float: left; margin-top: 200px; } #mainDiv > #player_box{ width: 200px; height: 600px; float: left; background-color: red; margin-top: 200px; display: inline; } #mainDiv > #chat_box{ width: 300px; display: inline; float: left; margin-bottom: 150px; } </style></head><body><div id="mainDiv"> <div id="message_box"></div> <div id="player_box"></div> <div id="chat_box"> <form method="POST" action="index.php"> <textarea rows="5"></textarea> <input type="submit"/> </form> </div></div>
-
delimited?
-
i am trying a script that wont work when i use double quotes like this: setTimeout('resetScroller("+el+")',speed); but instead i have to use thi syntax: setTimeout('resetScroller(''+el+'')',speed); whats the diffrence? Because they wont give the same result.
-
so the line "username" after KEY just points out where mysql should look?
