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JavaScript - Scroll Up By Specified Number Of Pixels
Hi guys,
My site has links in it with hash tags so people can share information externally, and when the link is clicked on my page loads already scrolled down on the correct div. ex. http://www.mysite.com/#div123 My issue is the top of the div is aligned exactly on the top of the text in div123. Since the browser automatically scrolls there, is there a way to make the page scroll up by 20 pixels just to make it look nicer? Thanks!! Similar TutorialsIs there a way with Firefox/Chrome to get the actual % used instead of the rendered pixel values? For example I have a table with the following CSS markup Code: #tableFoo : { width : 50%; }
In IE to get the percentage set in the CSS file, it is as simple as: Code: var width = tableObj.currentStyle["width"] I am having trouble figuring out a way to get the percentage value with Firefox and Chrome. I am thinking it is not possible other than stylesheet sniffing and ripping out the rules that way which I am not going to do. Thanks, Eric I have a function below where every time a question is submitted, it will add a new row in the table with a textbox which allows numbers entry only. My question is that I don't know how to code these features in this function: 1: I want the text box to be between 0 and 100, so if text box contains a number which is above 100, it will automatically change the number to the maximum number which is 100. Does any one know how to code this in my function below in javascript: Code: function insertQuestion(form)
{
var row = document.createElement("tr");
var cell, input;
cell = document.createElement("td");
cell.className = "weight";
input = document.createElement("input");
input.name = "weight_" + qnum;
input.onkeypress = "return isNumberKey(event)";
cell.appendChild(input);
row.appendChild(cell);
}
I am trying to customize this scrollbar so that it will fit all screen resolutions and I was wondering how I could do this by somehow customizing the JavaScript files created by Nathan Faubion or if I could do this using other JavaScript variables (var widthPercentage) to change the pixels to percentages? Please let me know what you think. Thank you very much! One of the pages on the website I'm using the JavaScript on: http://www.clintshipley.com/about.html Code: JavaScript file jsScroller.js:
//Created by Nathan Faubion http://www.n-son.com/scripts/jsScrolling/
function jsScroller (o, w, h) {
var self = this;
var list = o.getElementsByTagName("div");
for (var i = 0; i < list.length; i++) {
if (list[i].className.indexOf("scroller-content") > -1) {
o = list[i];
}
}
//Private methods
this._setPos = function (x, y) {
if (x < this.viewableWidth - this.totalWidth)
x = this.viewableWidth - this.totalWidth;
if (x > 0) x = 0;
if (y < this.viewableHeight - this.totalHeight)
y = this.viewableHeight - this.totalHeight;
if (y > 0) y = 0;
this._x = x;
this._y = y;
with (o.style) {
left = this._x +"px";
top = this._y +"px";
}
};
//Public Methods
this.reset = function () {
this.content = o;
this.totalHeight = o.offsetHeight;
this.totalWidth = o.offsetWidth;
this._x = 0;
this._y = 0;
with (o.style) {
left = "0px";
top = "0px";
}
};
this.scrollBy = function (x, y) {
this._setPos(this._x + x, this._y + y);
};
this.scrollTo = function (x, y) {
this._setPos(-x, -y);
};
this.stopScroll = function () {
if (this.scrollTimer) window.clearInterval(this.scrollTimer);
};
this.startScroll = function (x, y) {
this.stopScroll();
this.scrollTimer = window.setInterval(
function(){ self.scrollBy(x, y); }, 40
);
};
this.swapContent = function (c, w, h) {
o = c;
var list = o.getElementsByTagName("div");
for (var i = 0; i < list.length; i++) {
if (list[i].className.indexOf("scroller-content") > -1) {
o = list[i];
}
}
if (w) this.viewableWidth = w;
if (h) this.viewableHeight = h;
this.reset();
};
//variables
this.content = o;
this.viewableWidth = w;
this.viewableHeight = h;
this.totalWidth = o.offsetWidth;
this.totalHeight = o.offsetHeight;
this.scrollTimer = null;
this.reset();
};
JavaScript on HTML page:
<script type="text/javascript" src="Scripts/jsScroller.js"></script>
<script type="text/javascript" src="Scripts/jsScrollbar.js"></script>
<script type="text/javascript">
var scroller = null;
var scrollbar = null;
window.onload = function () {
scroller = new jsScroller(document.getElementById("scroller"), 550, 275);
scrollbar = new jsScrollbar (document.getElementById("scrollbar-content"), scroller, false);
}
</script>
When I used toFixed() method on a number, I thought that this method round a number to a specified approximation, but I got a surprising result, the number became string! 15.23689 .toFixed ( 2 ) ==> "15.24" So does it convert the number into string? I am trying to figure out how to make a random number I can plug into a script count down from that number at certain times of the day until it reaches 0. I would like it to reset itself at midnight every day. I'm trying to make it work with a script I found on here that resets itself at midnight every day. So instead of it counting down too fast, it would count down to the next number after a randomly generated number of minutes until it reaches 0. But it wouldn't necessarily have to end at 0 at midnight. It could go from 845 to 323 at the end of the day at a slower pace. Is that possible?
Have a container set to an em height and need the get the scroll or overflow value. Basically need to know if text node inside container has content hidden below the height allowed. How do I get this?
Does anyone know where I could get a scroller similar to the one used in this recent news div? http://www.383project.com/ thanks! I am delving into the coding world and while I understand the basic principle of cookies, conditional statements, arrays, etc... I am still learning how to properly implement them. Any asistance with the following situation would be greatly appreciated and help with my learning as I try to reverse engineer the logic. I have looked around the web and this forum with little success. If the situation below is too complicated, I would really appreciate even a shove in the right direction regarding the logic. ----------------- How could I show a preset counter which counts up from a preset, beginning number toward a preset, end number? I imagine the increment and speed is set be the difference between the two numbers and a timeframe. Assumptions: I would rather not set the increment but edit the end number to show a steady increase. As I update that number, the increment adapts dynamically. I would want the number/script to be useful, so it should not refresh to the beginning number on each page load (i.e. num=0). When a visitor comes to the page, it must seem like the counter has been steadily been increasing in their absence. Coke or Pesi did something similar one time regarding cans sold to date (doubt it was plugged into a DB somewhere but rather based on a steady sales figure) and it was pretty cool. All the best! Hello All, How can i want to capture onscroll event in Javascript ? Thanks in advance. here is the source of my plugin, OSX Style Dialog http://www.ericmmartin.com/projects/simplemodal-demos/# here is my code... my problem is the content is so long... and i can't scroll the page down.. Code: <!DOCTYPE html>
<html>
<head>
<title> SimpleModal OSX Style Dialog </title>
<meta name='author' content='Eric Martin' />
<meta name='copyright' content='2009 - Eric Martin' />
<!-- OSX Style CSS files -->
<link type='text/css' href='css/osx.css' rel='stylesheet' media='screen' />
<!-- JS files are loaded at the bottom of the page -->
</head>
<body>
<div id='osx-modal'><h2>OSX Style Modal Dialog</h2>
<p>A OSX style modal dialog demonstrating the felxibility of SimpleModal.</p>
<input type='button' name='osx' value='Demo' class='osx demo'/> or <a href='#' class='osx'>Demo</a>
</div>
<div id="osx-modal-content">
<div id="osx-modal-title">OSX Style Modal Dialog</div>
<div id="osx-modal-data">
<table width="477" border="0">
<tr>
<td width="471"><h1>Terms & Conditions</h1></td>
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<td><INPUT type="button" value="Close Window" onClick="window.close()"> </td>
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</table>
<p><button class="simplemodal-close">Close</button> <span>(or press ESC or click the overlay)</span></p>
</div>
</div>
<!-- Load JavaScript files -->
<script type='text/javascript' src='js/jquery.js'></script>
<script type='text/javascript' src='js/jquery.simplemodal.js'></script>
<script type='text/javascript' src='js/osx.js'></script>
</body>
</html>
here is the CSS Code: body {height:100%; margin:0;}
#osx-modal-content, #osx-modal-data {display:none;}
/* Overlay */
#osx-overlay {background-color:#000; cursor:wait;}
/* Container */
#osx-container {background-color:#eee; color:#000; font-family:"Lucida Grande",Arial,sans-serif; font-size:.9em; padding-bottom:4px; width:600px; -moz-border-radius-bottomleft:6px; -webkit-border-bottom-left-radius:6px; -moz-border-radius-bottomright:6px; -webkit-border-bottom-right-radius:6px; -moz-box-shadow:0 0 64px #000; -webkit-box-shadow:0 0 64px #000;}
#osx-container a {color:#ddd;}
#osx-container #osx-modal-title {color:#000; background-color:#ddd; border-bottom:1px solid #ccc; font-weight:bold; padding:6px 8px; text-shadow:0 1px 0 #f4f4f4;}
#osx-container .close {display:none; float:right;}
#osx-container .close a {display:block; color:#777; font-size:.8em; font-weight:bold; padding:6px 12px 0; text-decoration:none; text-shadow:0 1px 0 #f4f4f4;}
#osx-container .close a:hover {color:#000;}
#osx-container #osx-modal-data {padding:6px 12px;}
#osx-container h2 {margin:10px 0 6px;}
#osx-container p {margin-bottom:10px;}
#osx-container span {color:#777; font-size:.9em;}
Hello, Could anyone plz recommend a script that adds a "move to top" box for our .php site similar to the one we have on our blog site: http://sand.greekconcierge.com/ many thanks, Andy Hi, Quick question - I want to find the scrollTop value for some ajax divs but I can't seem to get scrollTop to work. The html looks like this: Code: <div id="media-meta-container" style="width: 302px;">
<p>Subtitles <span id="status" ></span></p>
<div id="scrollbox" >
<div id="content" >
<div id="content_0">Content 0</div>
<div id="content_1">Content 1</div>
<div id="content_2">Content 2</div>
<div id="content_3">Content 3</div>
<div id="content_4">Content 4</div>
</div>
</div>
</div>
Where scrollbox is, you guessed it, a scroll box. I want to find the y position of each of the content divs. I tried this (for exampel for the last element) but it didn't work: Code: var height = $('#content div')[4].attr('scrollTop');
Any ideas? A div that moves the divs innerHTML with a scrollbar.
Hi all, I am building a website with a smooth scroll function... that site is: katielipsitt.com/website As you will see if you click the menu links, the page scrolls too far up. I would like each div to stop right below the navigation. I am not very familiar with javascript, so I am wondering where in the code I would put this? I imagine I'll be able to put in something to tell the page to "scroll to Div'X' but leave 150 pixels of padding at the top" Is that possible? Thanks!! hello I have the Javasript , to Control the direction of Maarquee .. its very useful for any one , feel fre to use .. But not this why i'm here I need to Improve it , this code Has 4 Images , 1- on click Marquee Speeds up .. done 2- On click Marquee Slows Down .. done 3-On click Marque Go left .. done 4-On click Marque Do right .. done 5- On click Marque Scroll Up ............Needs Help to do it 6- On click Marquee Scroll Down .... Needs help to do it i want N# 5 , 6 done same way on clik on image to go up and down .. code PHP Code: <style type="text/css">a {text-decoration: none} a:link {color: black;}</style> <table style="width: 100%; direction: rtl; background-color: EBEBEC; border: 1px solid EBEBEC" cellspacing="3" cellpadding="3" class="style1"> <tr> <td style="width: 100px"> <img src="images/right_button.gif" title="Go Right" border="0" align="center" style="cursor:hand;" onclick="document.all.last_feed.direction='right';document.all.last_feed.start();"> <img src="images/left_button.gif" title="Go Left" border="0" align="center" style="cursor:hand;" onclick="document.all.last_feed.direction='left';document.all.last_feed.start();"> <img src="images/plus.gif" title="Speed Up" border="0" align="center" style="cursor:hand; " onclick="document.all.last_feed.scrollAmount=8;"> <img src="images/minus.gif" title="Slow Down" border="0" align="center" style="cursor:hand;" onclick="document.all.last_feed.scrollAmount=4;"> </td> <td style="font-family: tahoma; font-size: 0.75em"> <marquee id="last_feed" behavior="scroll" direction="right" scrolldelay="50" height="20" scrollamount="5" onmouseover="this.setAttribute('scrollamount', 0, 0); " onmouseout="this.setAttribute('scrollamount', 5, 0);" >Your Text here</marquee></td></tr></table> Hi, on my site:http://www.jbiddulph.com/chrisbradshaw/ I need to be able to scroll the whole site horizontally, there may be 20 or so images, ther only way i have figured out how to do it is it guess a max width, like just put width: 5000px; but I cannot determine the whole width with however many images in the page?! I have a javascript below that gets the width of the first image but I need to get width of all images and add 20px padding to the right of each http://www.jbiddulph.com/chrisbradshaw/getwidth.html Can someone please help?! I have looked a Jquery sliders and scrollers and can only find carousels?! I am wondering how i can make a page auto scroll in any direction when the mouse gets too close, i was thinking about an image following the mouse could do it <didnt work, any ideas on how i would do that? I was thinking about a broken drag and drop script, that never drops < didnt work Hello, sorry to bother you all - I am quite new to javascript, i have found an engine that i would like to edit, in the following javascript code, it will contain code on moving a player to the left, what i want is for every 32px it moves the player left, i want it to also to scroll the map at the same time (it's all contained in a div called "global_map") - Please help me, i am in urgent need of help please and thank you guys! Code: function player_move_left(user_id, bloc_id, charaset, prefix)
{
var player_id = prefix + user_id;
var next_left_pos = Math.round((parseInt(document.getElementById(player_id).style.left) - tile_size + player[user_id].left_gain) / tile_size);
var next_top_pos = Math.round((parseInt(document.getElementById(player_id).style.top) + player[user_id].top_gain) / tile_size);
//var next_lower_bloc = 'l' + next_left_pos + '-' + next_top_pos;
//var next_upper_bloc = 'u' + next_left_pos + '-' + next_top_pos;
var next_event_bloc = 'i' + next_left_pos + '-' + next_top_pos;
if ( map_pass[next_top_pos][next_left_pos] )
{
if ( user_id == my_user_id )
{
move_update(bloc_id, -1, 0);
}
document.getElementById('charaset_' + user_id).style.top = -player[user_id].height + 'px';
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[1] + ') + \'px\';', 62);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[2] + ') + \'px\';', 125);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[3] + ') + \'px\';', 187);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[4] + ') + \'px\';', 250);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[5] + ') + \'px\';', 312);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[6] + ') + \'px\';', 375);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[7] + ') + \'px\';', 437);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[8] + ') + \'px\';', 500);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[9] + ') + \'px\';', 562);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[10] + ') + \'px\';', 625);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[11] + ') + \'px\';', 687);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[12] + ') + \'px\';', 750);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[13] + ') + \'px\';', 812);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[14] + ') + \'px\';', 875);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[15] + ') + \'px\';', 937);
setTimeout('document.getElementById(\'' + player_id + '\').style.left = (parseInt(document.getElementById(\'' + player_id + '\').style.left) - ' + division[16] + ') + \'px\';', 1000);
setTimeout('document.getElementById(\'charaset_' + user_id + '\').style.left = \'-' + player[user_id].width + 'px\';', 63);
setTimeout('document.getElementById(\'charaset_' + user_id + '\').style.left = \'-' + (player[user_id].width * 2) + 'px\';', 188);
setTimeout('document.getElementById(\'charaset_' + user_id + '\').style.left = \'-' + (player[user_id].width * 3) + 'px\';', 313);
setTimeout('document.getElementById(\'charaset_' + user_id + '\').style.left = \'0px\';', 438);
setTimeout('document.getElementById(\'charaset_' + user_id + '\').style.left = \'-' + player[user_id].width + 'px\';', 563);
setTimeout('document.getElementById(\'charaset_' + user_id + '\').style.left = \'-' + (player[user_id].width * 2) + 'px\';', 688);
setTimeout('document.getElementById(\'charaset_' + user_id + '\').style.left = \'-' + (player[user_id].width * 3) + 'px\';', 813);
setTimeout('document.getElementById(\'charaset_' + user_id + '\').style.left = \'0px\';', 938);
/*if ( (parseInt(document.getElementById(player_id).style.left) - tile_size + player[user_id].left_gain) > parseInt(document.getElementById(bloc_id).style.left) )
{
setTimeout('player_move_left(\'' + user_id + '\', \'' + bloc_id + '\', \'' + charaset + '\', \'' + prefix + '\')', 1000);
}
else
{*/
if ( prefix == 'p' )
{
if ( user_id == my_user_id && events_placement[next_top_pos][next_left_pos][0].length > 0 )
{
if ( path_finished )
{
setTimeout('exec_event(' + user_id + ', ' + next_left_pos + ', ' + next_top_pos + ', 0);', 1000);
}
}
else
{
setTimeout('player[' + user_id + '].moving = false;', 1000);
}
}
/*}*/
}
else
{
document.getElementById('charaset_' + user_id).style.top = -player[user_id].height + 'px';
if ( prefix == 'p' )
{
if ( user_id == my_user_id && events_placement[next_top_pos][next_left_pos][1].length > 0 )
{
if ( event_data[next_event_bloc].changedir )
{
document.getElementById('charaset_' + next_event_bloc).style.top = '-' + (parseInt(document.getElementById('charaset_' + next_event_bloc).style.height) / 2) + 'px';
}
if ( user_id == my_user_id )
{
move_update(bloc_id, 0, 0);
}
exec_event(user_id, next_left_pos, next_top_pos, 1);
}
else
{
player[user_id].moving = false;
}
}
}
}
If you still don't get what i am asking for (which i appreciate!) is that i want to know how to scroll 2 things at the same time (the player div and the global_map div) Hello, How can i get scroll bar position of body tag ? Thanks in advance. I've started seeing this on a few pages and I'd like to add it to mine. I'd like to add a back to top button where it doesn't just jump right to the top, but acts like the user were actually using the scroll bar. here are some well done examples: http://www.javascriptkit.com/jsref/window.shtml and http://www.webdesignerheaven.com/ I like the first one better (where it shows an up arrow if you've scrolled far enough), and I found what I think is the javascript responsible (though I'm not sure if it's exact right to take it.) let alone, i'm not sure how i would even implement it yet. http://www.javascriptkit.com/jkinclu...ltopcontrol.js i've got a basic example working on my own site, I just don't know how to stop it, (right now it just keeps going and going even if i try to scroll back down.) i'd like to be able to tell if the user reached the top, then stop it, but from what I've looked, i can't find a way to check where exactly they are in my page. i figure, if i can get mine to stop, I can fancify it later with the image that shows if you've moved down and what not, right now I'd like to just stop it when it reaches the top. |
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