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JavaScript - Prevent Arrow Key Scrolling
Hey!
I searched a while on the web for this but i didn't find a solution that really worked. So is there a way how i can prevent IE9 from scrolling when i use the arrow keys? Similar TutorialsI am using the following code from this site... http://www.javascriptkit.com/script/...selector.shtml but for some reason if the page is long the whole page scrolls up so the top of the calendar is at the top of the browser, which actually hides the box that the date will end up in. can anyone see how I can alter the code so that the page does not scroll up, but have the calendar show just below the box that the date will go in and the page does not scroll? here is the full code that I am using to test this out with. Code: <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<style type="text/css">
.ds_box {
background-color: #FFF;
border: 1px solid #000;
position: absolute;
z-index: 32767;
}
.ds_tbl {
background-color: #FFF;
}
.ds_head {
background-color: #333;
color: #FFF;
font-family: Arial, Helvetica, sans-serif;
font-size: 13px;
font-weight: bold;
text-align: center;
letter-spacing: 2px;
}
.ds_subhead {
background-color: #CCC;
color: #000;
font-size: 12px;
font-weight: bold;
text-align: center;
font-family: Arial, Helvetica, sans-serif;
width: 32px;
}
.ds_cell {
background-color: #EEE;
color: #000;
font-size: 13px;
text-align: center;
font-family: Arial, Helvetica, sans-serif;
padding: 5px;
cursor: pointer;
}
.ds_cell:hover {
background-color: #F3F3F3;
} /* This hover code won't work for IE */
</style>
</head>
<body>
<table class="ds_box" cellpadding="0" cellspacing="0" id="ds_conclass" style="display: none;">
<tr><td id="ds_calclass">
</td></tr>
</table>
<script>
// <!-- <![CDATA[
// Project: Dynamic Date Selector (DtTvB) - 2006-03-16
// Script featured on JavaScript Kit- http://www.javascriptkit.com
// Code begin...
// Set the initial date.
var ds_i_date = new Date();
ds_c_month = ds_i_date.getMonth() + 1;
ds_c_year = ds_i_date.getFullYear();
// Get Element By Id
function ds_getel(id) {
return document.getElementById(id);
}
// Get the left and the top of the element.
function ds_getleft(el) {
var tmp = el.offsetLeft;
el = el.offsetParent
while(el) {
tmp += el.offsetLeft;
el = el.offsetParent;
}
return tmp;
}
function ds_gettop(el) {
var tmp = el.offsetTop;
el = el.offsetParent
while(el) {
tmp += el.offsetTop;
el = el.offsetParent;
}
return tmp;
}
// Output Element
var ds_oe = ds_getel('ds_calclass');
// Container
var ds_ce = ds_getel('ds_conclass');
// Output Buffering
var ds_ob = '';
function ds_ob_clean() {
ds_ob = '';
}
function ds_ob_flush() {
ds_oe.innerHTML = ds_ob;
ds_ob_clean();
}
function ds_echo(t) {
ds_ob += t;
}
var ds_element; // Text Element...
var ds_monthnames = [
'January', 'February', 'March', 'April', 'May', 'June',
'July', 'August', 'September', 'October', 'November', 'December'
]; // You can translate it for your language.
var ds_daynames = [
'Sun', 'Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat'
]; // You can translate it for your language.
// Calendar template
function ds_template_main_above(t) {
return '<table cellpadding="3" cellspacing="1" class="ds_tbl">'
+ '<tr>'
+ '<td class="ds_head" style="cursor: pointer" onclick="ds_py();"><<</td>'
+ '<td class="ds_head" style="cursor: pointer" onclick="ds_pm();"><</td>'
+ '<td class="ds_head" style="cursor: pointer" onclick="ds_hi();" colspan="3">[Close]</td>'
+ '<td class="ds_head" style="cursor: pointer" onclick="ds_nm();">></td>'
+ '<td class="ds_head" style="cursor: pointer" onclick="ds_ny();">>></td>'
+ '</tr>'
+ '<tr>'
+ '<td colspan="7" class="ds_head">' + t + '</td>'
+ '</tr>'
+ '<tr>';
}
function ds_template_day_row(t) {
return '<td class="ds_subhead">' + t + '</td>';
// Define width in CSS, XHTML 1.0 Strict doesn't have width property for it.
}
function ds_template_new_week() {
return '</tr><tr>';
}
function ds_template_blank_cell(colspan) {
return '<td colspan="' + colspan + '"></td>'
}
function ds_template_day(d, m, y) {
return '<td class="ds_cell" onclick="ds_onclick(' + d + ',' + m + ',' + y + ')">' + d + '</td>';
// Define width the day row.
}
function ds_template_main_below() {
return '</tr>'
+ '</table>';
}
// This one draws calendar...
function ds_draw_calendar(m, y) {
// First clean the output buffer.
ds_ob_clean();
// Here we go, do the header
ds_echo (ds_template_main_above(ds_monthnames[m - 1] + ' ' + y));
for (i = 0; i < 7; i ++) {
ds_echo (ds_template_day_row(ds_daynames[i]));
}
// Make a date object.
var ds_dc_date = new Date();
ds_dc_date.setMonth(m - 1);
ds_dc_date.setFullYear(y);
ds_dc_date.setDate(1);
if (m == 1 || m == 3 || m == 5 || m == 7 || m == 8 || m == 10 || m == 12) {
days = 31;
} else if (m == 4 || m == 6 || m == 9 || m == 11) {
days = 30;
} else {
days = (y % 4 == 0) ? 29 : 28;
}
var first_day = ds_dc_date.getDay();
var first_loop = 1;
// Start the first week
ds_echo (ds_template_new_week());
// If sunday is not the first day of the month, make a blank cell...
if (first_day != 0) {
ds_echo (ds_template_blank_cell(first_day));
}
var j = first_day;
for (i = 0; i < days; i ++) {
// Today is sunday, make a new week.
// If this sunday is the first day of the month,
// we've made a new row for you already.
if (j == 0 && !first_loop) {
// New week!!
ds_echo (ds_template_new_week());
}
// Make a row of that day!
ds_echo (ds_template_day(i + 1, m, y));
// This is not first loop anymore...
first_loop = 0;
// What is the next day?
j ++;
j %= 7;
}
// Do the footer
ds_echo (ds_template_main_below());
// And let's display..
ds_ob_flush();
// Scroll it into view.
ds_ce.scrollIntoView();
}
// A function to show the calendar.
// When user click on the date, it will set the content of t.
function ds_sh(t) {
// Set the element to set...
ds_element = t;
// Make a new date, and set the current month and year.
var ds_sh_date = new Date();
ds_c_month = ds_sh_date.getMonth() + 1;
ds_c_year = ds_sh_date.getFullYear();
// Draw the calendar
ds_draw_calendar(ds_c_month, ds_c_year);
// To change the position properly, we must show it first.
ds_ce.style.display = '';
// Move the calendar container!
the_left = ds_getleft(t);
the_top = ds_gettop(t) + t.offsetHeight;
ds_ce.style.left = the_left + 'px';
ds_ce.style.top = the_top + 'px';
// Scroll it into view.
ds_ce.scrollIntoView();
}
// Hide the calendar.
function ds_hi() {
ds_ce.style.display = 'none';
}
// Moves to the next month...
function ds_nm() {
// Increase the current month.
ds_c_month ++;
// We have passed December, let's go to the next year.
// Increase the current year, and set the current month to January.
if (ds_c_month > 12) {
ds_c_month = 1;
ds_c_year++;
}
// Redraw the calendar.
ds_draw_calendar(ds_c_month, ds_c_year);
}
// Moves to the previous month...
function ds_pm() {
ds_c_month = ds_c_month - 1; // Can't use dash-dash here, it will make the page invalid.
// We have passed January, let's go back to the previous year.
// Decrease the current year, and set the current month to December.
if (ds_c_month < 1) {
ds_c_month = 12;
ds_c_year = ds_c_year - 1; // Can't use dash-dash here, it will make the page invalid.
}
// Redraw the calendar.
ds_draw_calendar(ds_c_month, ds_c_year);
}
// Moves to the next year...
function ds_ny() {
// Increase the current year.
ds_c_year++;
// Redraw the calendar.
ds_draw_calendar(ds_c_month, ds_c_year);
}
// Moves to the previous year...
function ds_py() {
// Decrease the current year.
ds_c_year = ds_c_year - 1; // Can't use dash-dash here, it will make the page invalid.
// Redraw the calendar.
ds_draw_calendar(ds_c_month, ds_c_year);
}
// Format the date to output.
function ds_format_date(d, m, y) {
// 2 digits month.
m2 = '00' + m;
m2 = m2.substr(m2.length - 2);
// 2 digits day.
d2 = '00' + d;
d2 = d2.substr(d2.length - 2);
// YYYY-MM-DD
// return y + '-' + m2 + '-' + d2;
return d2 + '-' + m2 + '-' + y;
}
// When the user clicks the day.
function ds_onclick(d, m, y) {
// Hide the calendar.
ds_hi();
// Set the value of it, if we can.
if (typeof(ds_element.value) != 'undefined') {
ds_element.value = ds_format_date(d, m, y);
// Maybe we want to set the HTML in it.
} else if (typeof(ds_element.innerHTML) != 'undefined') {
ds_element.innerHTML = ds_format_date(d, m, y);
// I don't know how should we display it, just alert it to user.
} else {
alert (ds_format_date(d, m, y));
}
}
// And here is the end.
// ]]> -->
</script>
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<form action="" method="post">
<div>
<b>Example Form</b><br/>
Please input a date: <input onclick="ds_sh(this);" name="date" readonly="readonly" style="cursor: text" /><br />
Please input another date: <input onclick="ds_sh(this);" name="date2" readonly="readonly" style="cursor: text" /><br />
<input type="submit" value="Submit" />
</div>
</form>
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</body>
</html>
I want to use an onkeydown() on my web site and the web site to know which key I pressed. Specifically know I pressed the arrow keys and store which key was pressed in a variable. any help? must work on all browsers. I've seen websites that have things like feedback and an arrow facing up that either take you to the top of the page or opens a form to give your feedback.
hi everybody; i'm using this code to trigger functions with left and right arrow keys.. but they work even if the arrow keys pressed in input boxes.. is there any way to prevent this code to work when user presses the arrow keys in input boxes? Code: document.onkeydown = function(evt) {
evt = evt || window.event;
switch (evt.keyCode) {
case 37:
geri();
gostergeyaz();
break;
case 39:
ileri();
gostergeyaz();
break;
}
};
Disable Arrow Keys I am creating an online flash gaming site, Aaron's Game Zone: http://azzaboi.weebly.com Some of the games on it use the arrow keys, however IE also uses them to scroll the page. I am learning JavaScript and am trying to write some script to pervent the page scrolling up and down while playing a game. For example... Guardian Rock uses the arrow keys to slide around, at the same time the page scrolls. http://azzaboi.weebly.com/guardianrock.html Here is the script I've tried to write to pervent the scrolling: Code: <script type="text/javascript">
function KeyPressHappened(e){
if (!e) e=window.event;
var key=e.charCode ? e.charCode : e.keyCode ? e.keyCode : 0;
if(key == 37 || key == 38 || key == 39 || key == 40)
{
e.preventDefault();
return false;
}
return true;
}
document.onkeypress = KeyPressHappened;
</script>
There's a bug in it or it's not correct, no error message given, could anyone point out the mistake please? On http://kisa.ca/cc/ I'm using JQuery's .keydown() to grab arrow keys. http://pastie.org/938572 But my friends using Linux are unable to use arrows to play the game: http://alteeve.com/files/cc.png Halp? Hello. I want to move something with the arrow keys, but some aprt of script is incorrect and it's not working Code: </style>
<script type="text/javascript">
function setup() {
row=0;
col=0;
imageSnake(row,col);
}
</script>
</head>
<body onload="setup()" onkeydown="handleKey(event)">
<center>
<script type="text/JavaScript">
document.write('<table border="1" cellspacing="0" cellpadding="10">')
var count =0
for (var row=0; row<20; row++) {
document.write('<tr>');
for (var col=0; col<20; col++) {
document.write('<td style="border:0"; id="count++";>');
document.write('</td>');
}
document.write('</tr>');
}
function handleKey(e) {
if (e.type == 'keydown' && (e.keyCode == 27 || (e.keyCode >= 37 && e.keyCode <= 40))) {
switch(e.keyCode) {
case 37:
dC = -1;
dR = 0;
break;
}
emptyCell(row,col);
function emptyCell
var id = 'r' + r + 'c' + c;
var cell = document.getElementById(id);
if (cell) cell.innerHTML='';
}
row += dR
col += dC
function insertImage(r,c) {
var id = 'r' + r + 'c' + c;
var cell = document.getElementById(id);
var color = cell.className;
if (color != 'white') {
var image = 'img.gif';
}else{
var image = 'img2.gif';
}
cell.innerHTML = '<img src="" + image + alt="" + color + 'image' />';
}
</script>
Thank you for any noticed error. Hi All, I have a javascript scrollbar in the middle of the webpage, with two images as arrow at both end. Onclick of up and down arrow images the inside content moves up and down respectively. All works fine. What I need is, when I scroll down the down arrow should be disabled or invisible (as there is nothing to scrolldown) and same way when the content is at the top, the up arrow should be disabled or invisible. Please help... Sharing the code : <body> <script src="http://milansolutions.com/file_depot/0-10000000/20000-30000/29948/folder/92044/dw_event.js" type="text/javascript"></script> <script src="http://milansolutions.com/file_depot/0-10000000/20000-30000/29948/folder/92044/dw_scroll.js" type="text/javascript"></script> <script src="http://milansolutions.com/file_depot/0-10000000/20000-30000/29948/folder/92044/scroll_controls.js" type="text/javascript"></script> <script type="text/javascript"> function init_dw_Scroll() { var wndo = new dw_scrollObj('wn1', 'lyr1'); wndo.setUpScrollControls('scroll_links'); wndo.setUpScrollControls('wn1'); var wndo2 = new dw_scrollObj('wn2', 'lyr2'); var wndo3 = new dw_scrollObj('wn3', 'lyr3'); wndo3.setUpScrollbar("dragBar", "track", "v", 1, 1); wndo3.setUpScrollControls('scrollbar'); wndo3.setUpScrollControls('extra_controls'); wndo3.setUpScrollControls('wn3'); } if ( dw_scrollObj.isSupported() ) { dw_writeStyleSheet('http://milansolutions.com/file_depot/0-10000000/20000-30000/29948/folder/92044/vert.css'); dw_Event.add( window, 'load', init_dw_Scroll); } </script> <link rel="stylesheet" href="http://milansolutions.com/file_depot/0-10000000/20000-30000/29948/folder/92044/vert.css" media="screen"> <h2>Demonstration</h2> <div class="holder1"> <div class="hasImage scroll_controls" id="scroll_links"> <a class="mouseover_up up" href=""><img src="http://milansolutions.com/file_depot/0-10000000/20000-30000/29948/folder/92044/tri-up.gif" alt="" width="12" height="12"></a> <a class="mouseover_down dn" href=""><img src="http://milansolutions.com/file_depot/0-10000000/20000-30000/29948/folder/92044/tri-dn.gif" alt="" width="12" height="12"></a> </div> <div id="wn1"> <div style="left: 0px; top: 0px; visibility: visible;" id="lyr1"> <h3>Mouseover Scrolling </h3> <p>This example demonstrates vertical scrolling using mouseover links. Scroll speed is adjustable.</p> <p>Mouse down on the arrows to see the speed double. Original speed resumes on mouseup.</p> <p>The documentation provides information for setup. The download file contains examples in individual files for your convenience and ease of implementation.</p> <p>The code supports the capability to hide or swap images when the end is reached. Further information is provided upon request to licensed users of the code.</p> <p>Content repeated for your scrolling pleasure </p> <p>This example demonstrates vertical scrolling using mouseover links. Scroll speed is adjustable.</p> <p>Mouse down on the arrows to see the speed double. Original speed resumes on mouseup.</p> <p>The documentation provides information for setup. The download file contains examples in individual files for your convenience and ease of implementation.</p> <p>The code supports the capability to hide or swap images when the end is reached. Further information is provided upon request to licensed users of the code.</p> <p>Back to the <a href="#" class="click_up_to_0_0">top</a></p> </div> </div> </div> I have a search box on my website, that gets users from my database using php. And uses Javascript to display suggestions as the users type. What I'd like to be able to is to use the arrows to toggle down through the different suggestions. Any ideas how I would go about doing this? Here's the javascript part of the code: Code: function createObject() {
var request_type;
var browser = navigator.appName;
if(browser == "Microsoft Internet Explorer"){
request_type = new ActiveXObject("Microsoft.XMLHTTP");
}else{
request_type = new XMLHttpRequest();
}
return request_type;
}
var http = createObject();
/* -------------------------- */
/* SEARCH */
/* -------------------------- */
function autosuggest() {
q = document.getElementById('search-q').value;
// Set te random number to add to URL request
nocache = Math.random();
http.open('get', 'lib/search.php?q='+q+'&nocache = '+nocache);
http.onreadystatechange = autosuggestReply;
http.send(null);
}
function autosuggestReply() {
if(http.readyState == 4){
var response = http.responseText;
e = document.getElementById('results');
if(response!=""){
e.innerHTML=response;
e.style.display="block";
} else {
e.style.display="none";
}
}
}
I have three buttons on a typical page (sample page: http://jimoberst.com/paintings/p18.html). One goes to the previous page, one to the next, and one up a level. Can I link these buttons to 3 arrow keys to simplify navigation for the user? I thought this would be a common task, but I cannot find any canned code on the web to do it. I can code simple html, but don't know javascript. Thanks!
I am trying to assign the left and right arrows, but I cannot get the code to work. It would be great to get some help--I am a newbie to coding. <html> <head> <script language="javascript" type="text/javascript"> document.onkeydown=function(e) { var thelink if (e.keyCode==37) thelink='prevlink' else if (e.keyCode==39) thelink='nextlink' else return document.location.href=document.getElementById(thelink).href} </script> </head> <body> <a href="#" onkeydown="return previous(this)" id="prevlink">PREVIOUS</a><br /> <br /> <a href="#" onkeydown="return next(this)" id="nextlink">NEXT</a> </body> </html> Hello, Is there anyway to prevent images, words, divisions, etc from being selected? Also if something is selected is there a way to deselect? Thanks! Hello. I'm using the keyup event for an input box to check for the Escape key (keyCode 27). I'm then using this to hide a related select element. It works okay apart from IE(8) of course . How can I prevent IE carrying on with its normal Escape behaviour? If tried a number of things, most recently: Code: e.cancelBubble = true; if ( e.stopPropagation ) e.stopPropagation(); return false; but it, IE, is insistant. I tried switching to 'keydown' but it went a bit wonky.. Andy. I have a tracking ad at the bottom of my site. (no iframes). how do I know and/or prevent that tracking ad from popping up a popup? They are not suppose to, but I suspect they do. Is there a way to track this, or perhaps prevent them from popping the popup from within my page? I have access to various libraries, prototype/jquery etc.. so if there is a func/method in those, I could use too. How do I prevent my Link from disappearing?? When I click on the link, "Click Here" It display, "Look At Me!!" but the link, "Click Here" is GONE Is there a way to keep my link, "Click Here" from disappearing? So when I click on the link, "Click Here" the content, "Look At Me!!"should display as well. thanks Here are my codes Code: <html>
<head>
<script type="text/javascript">
function display() {
document.writeln("Look At Me!!");
}
</script>
</head>
<body>
<a href="google.com" onClick="display()">Click Here</a>
</body>
</html>
I retrieve a list of links from a database using ajax, then I assign them to the innerHTML property of a div whose display property is set to "none" Then I set the display property to "display" to get a drop-down listbox. The problem is the links in the list are all hilighted like they've been dragged over by a mouse. How do I prevent these links from highlighting? Code: 1 ,<input id="14sq-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 2 ,<input id="510sq-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 3 ,<input id="1119sq-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 4, <input id="20jsq-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 5 ,<input id="oneyear-und-0-value" maxlength="10" class="form-text" type="text"> 6 ,<input id="twoyear-und-0-value" maxlength="10" class="form-text" type="text"> 7 ,<input id="threeyear-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 8 <input id="vpssq-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 9 <input id="500zh-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 10 <input id="1000zh-und-0-value" size="12" maxlength="10" class="form-text" type="text"> 11 <input id="1500zh-und-0-value" size="12" maxlength="10" class="form-text" type="text"> now, i want to do, if the editor type content to 1, 2, 3 4 input box and finished namely the 1 ,2,3 4have value , then he can't type anything to the rest. if the 5,6,7, input box has value. then can't type anything to the rest. if the 8, input box has value. then can't type anything to the rest. if the9,10,11, input box has value. then can't type anything to the rest. I am using an e-commerce solution to run my web business. The checkout portion of the website is COMPLETELY closed off to me and I can't access the files. What I need: A javascript example / solution that will prevent someone from submitting a form without first filling in a field. What I currently have is a series of radio buttons built into the checkout process. It displays 20 options and the customer has to choose which one of the twenty options applies to them. Each customer only has 2 valid options to choose from based on their zip code, but currently the other zip code shipping options are listed as well. I have built a javascript that works great hiding all of the shipping options, taking data from the customer, and then only showing the correct shipping option. The problem is, if the customer doesn't fill this out, then they can just hit submit and pay the default shipping option without ever seeing that they didn't choose the correct zip code. What can I do to prevent them from submitting the form? The submit form is a button and there are 6 other buttons and none of them have any identifying factors. |
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