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JavaScript - Move The Scrollbar On A Div To The Bottom
I am working on a ajax chat system right now and I've ran into a little problem. I have no idea how to go about doing this but I know there has to be a way of doing this because I've seen it done before on other ajax chats I've seen. How do I ago about moving the scrollbar of a div to the bottom so that it shows the last that has been entered into the chat.
If you need me to explain more then just let me know. But basically I'm wanting the scrollbar when it overflows in the window of a div to go and to the bottom when someone enters something new to the chat. Similar TutorialsHello. Could you guys point me in the right direction. I have a DIV that I woul like to move along with the users vertical scrollbar. So when the user scrolls down on the page the DIV will follow. Where can I find information on how I can do this.
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So if the user enters a serial number in the "Serial_Number" field and hits enter I would like the cursor to move DOWN to the next "Serial_Number" field. Is this possible?? Tracy Code: <table>
<tr>
<td>
Serial Number:<br>
<input
type = "text"
size = "30"
onclick = "this.select();"
onChange = "updateField(this.name,this.id,this.value)";
value = ""
name = "Serial_Number"
class = "textfield"
id = "Serial_Number.4853" >
</td>
<td>Cat Number:<br>
<input
type = "text"
size = "30"
onclick = "this.select();"
onChange = "updateField(this.name,this.id,this.value)";
value = ""
name = "Cat_Number"
class = "textfield"
id = "Cat_Number.4853" >
</td>
</tr>
<tr>
<td>
Serial Number:<br>
<input
type = "text"
size = "30"
onclick = "this.select();"
onChange = "updateField(this.name,this.id,this.value)";
value = ""
name = "Serial_Number"
class = "textfield"
id = "Serial_Number.4854" >
</td>
<td> Cat Number:<br>
<input
type = "text"
size = "30"
onclick = "this.select();"
onChange = "updateField(this.name,this.id,this.value)";
value = ""
name = "Cat_Number"
class = "textfield"
id = "Cat_Number.4854" >
</td>
</tr>
<tr>
<td>
Serial Number:<br>
<input
type = "text"
size = "30"
onclick = "this.select();"
onChange = "updateField(this.name,this.id,this.value)";
value = ""
name = "Serial_Number"
class = "textfield"
id = "Serial_Number.4855" >
</td>
<td>Cat Number:<br>
<input
type = "text"
size = "30"
onclick = "this.select();"
onChange = "updateField(this.name,this.id,this.value)";
value = ""
name = "Cat_Number"
class = "textfield"
id = "Cat_Number.4855" >
</td>
</tr>
</table>
Hey all im getting used to using .js still and I am trying to figure out how to create a button to move a selected field within a box of fields to the top, instead of just moving it one-by-one to the top. Here is what I currently have that moves the selected just up one. Can someone expand on this and make it so it will move to the top instead of just one? SearchFieldsWindow.prototype.cmdMoveUp_OnClick = function() { var searchFields = this.__searchFields; var items = this.__lstSelected.get_Items(); var selectedIndices = this.__lstSelected.get_SelectedIndices(); var count = selectedIndices.get_Count(); for (var i = 0; i < count; i++) { var selectedIndex = selectedIndices.get_Item(i); // Don't allow when first item selected if (selectedIndex == 0) break; var uniqueID = items.get_ItemValue(selectedIndex); var label = items.get_ItemLabel(selectedIndex); searchFields.MoveUp(uniqueID); items.RemoveAt(selectedIndex); items.Insert(selectedIndex - 1, uniqueID, label); this.__lstSelected.SetSelected(selectedIndex - 1, true); this.__lstSelected.SetSelected(selectedIndex, false); } }; I have a Java script chat, How would I make a scroll bar for it? Does any one have any code for that? or do you know what I have to do? thanks, Yo_papa75 Hi, I'm currently working on a JavaScript scrollbar on my website: http://allotrope-dome.net. I managed to get most of the code working. The only part that isn't working is that users can't click and drag on the scrollbar (click on the "About" section in the navigation bar to get a better idea of what I'm talking about). If any of you could help me out with that, I'd really appreciate it. Thanks! To see the code, go to http://allotrope-dome.net/about.php and click "View Source." So, here is my question: Is there some possibility to put the horizontal scroll bar of the web browser into the center if the "width" of web page are bigger then the "width" of the web browser screen? So I don't need to scroll to right if I open the page, but the horizontal scroll bar will be positioned in the center. That code should do the same think like I when I take the scroll bar and put it in the center position, but this should be happen when I load the page automatically. Or how can I do that? thanks to all . . . When Scroll Bar is scrolling, at that time how can we find using js what is the element at the topmost position in that window pane only. When the user scrolls down, the value of element at the time of that at topmost position I'm trying to figure out which elements of a document are visible as the user scrolls the Firefox browser. I haven't written the code yet but I think I should be able to do it by keeping track of the current display using the following properties: window.content.scrollX, window.content.scrollY, window.content.innerWidth, window.content.innerHeight. -- with these 4 I can determine which part of the document is visible. Then for each element I can figure out its display position using, offsetWidth, offsetHeight, offsetTop, offsetLeft. This would entail traversing the DOM and perculating the offset values down to all the children. While this would likely work, it seems inefficient. Do you know of any other ways to determine which elements are actually on the screen? So, here is my question: Is there some possibility with php to put the horizontal scroll bar of the web browser into the center if the "width" of web page are bigger then the "width" of the web browser screen? So I don't need to scroll to right if I open the page, but the horizontal scroll bar will be positioned in the center. That code should do the same think like I when I take the scroll bar and put it in the center position, but this should be happen when I load the page automatically. Or how can I do that? thanks to all . . . Hi there, I am pretty new to javascript coding, and I could use little help... As you can see here, I got this code where I can move image inside of a box, and I do it by clicking these "links". And now I want to ask you, is there any way that I could move image using keys on keyboard (arrows or WSAD)? I'd like to keep this as simple as possible since I am not really into very advanced scripts (although I could probably understand them if you give little explanation). Code: <html>
<head>
<body>
<script type="application/ecmascript">
// X position of image
var x = 0;
// Y position of image
var y = 0;
// Move per click
var inc = 10;
function Init()
{
document.getElementById('autic').style.left = x + 'px';
document.getElementById('autic').style.top = y + 'px';
}
function moveRight()
{
x += inc;
document.getElementById('autic').style.left = x + 'px';
}
function moveLeft()
{
x -= inc;
document.getElementById('autic').style.left = x + 'px';
}
function moveUp()
{
y -= inc;
document.getElementById('autic').style.top = y + 'px';
}
function moveDown()
{
y += inc;
document.getElementById('autic').style.top = y + 'px';
}
</script>
<style>
#box
{
width: 500px;
height: 300px;
position: relative;
margin: 20px auto 0px auto;
border: 5px outset #000;
overflow: hidden;
}
.image
{
position: absolute;
z-index: 100;
}
</style>
</head>
<body onload="javascript:Init()">
<div id="box"><img class="image" id="autic" src="auto.png"/></div>
<a href="javascript:moveLeft()">Left</a>
<a href="javascript:moveUp()">Up</a>
<a href="javascript:moveDown()">Down</a>
<a href="javascript:moveRight()">Right</a>
</body>
</html>
How do I change the <br /> tags in the follow code to javascript code that performs the same function. I need new lines where you see the <br /> tags and I can't use <br /> since my javascript is within the header section of my HTML file and the W3C validator doesn't like it. Therefore, how do I change the following code to pure javascript with no <br />'s. I tried using \n and \r\n but maybe I didn't use this right as it didn't work. Please help, I am new to javascript txt="Name: "+name+"Sex: "+sex+"<br />Ethnicity: "+ethnicity+"<br />Region: "+region+"<br />Profession: "+profession+"<br />Membership_status: "+membership_status+"<br />Seeking: "+seeking+"<br />Education: "+education+"<br />Body Type: "+body_type+"<br />Eye Colour: "+eye_colour+"<br />Smoker: "+smoker+"<br />Drinker: "+drinker ; Hi Guys. First off i'd like to say Hi as i'm new to the forums. But am looking forward to spending a lot of time here. I am currently studying Javascript to help create a bit more user interaction with my websites which I use CSS/XHTML and PHP5 to design. Ok with that said I was hoping someone might be able to lend a slight hand. I am trying to create an Image menu for a site I'm working on that is rather simple in essence. When the user hovers over a button I have the menu will move left or right depending. I have not got a great deal into it yet as I have become stuck, as I'm new I figured it would be easier to troubleshoot if I build up the program bit by bit. ----> menupic variable is being passed by php into javascript Code: function moveImagesLeft() {
for (i=0; i<=100; i++) {
setPixels = (i + 2);
for (L=1; L<=menuPic; L++){ /* this loop makes sure that all the pictures move together */
indexpic = "menupic"+L;
document.getElementById(indexpic).style.left="-"+setPixels+"px";
}
}
}
Ok, very simple. I have a DIV container that holds my images and the overflow is hidden, php works out how many images there are and feeds that into javascript. This all works fantastically however it seems that once I reach the bottom of my second for loop Code: document.getElementById(indexpic).style.left="-"+setPixels+"px"; Nothing else happens, the pictures all shift left 2pixels as they should but nothing else. The top loop is not going again (excuse the poor use of terminology) I dont know if it makes a different but where the images are they are declared as so. Code: <a href="#"><img class="menupic" id="menupic1,2,3,4,5 (etc)" src="_image" border="0" height="50" width="60"></a> Code: .menupic {position:relative; display:block; width:60px, height:40px}
and the Id class is there so that my javascript can control it. I hope that I have worded this in a way that is easily understandable. Any help would be greatly appreciated. I try not to ask for too much help because working things out is part of the learning curve but in this instance I have spent a lot of time and not found a solution. Kindest Regards Oli Hi all, I'm trying to do something with a WYSIWYG editor. Below is a piece of code that takes selected text and wraps various BBCodes around it. The code almost works... but I want a few changes and I hope someone has an idea for me. Note: the var range = ed.selection.getRng(true); line gets a W3C compatible range containing the current selection - even under MSIE. The editor takes care of this. Note: The var elem = ed.dom.create('span', false, ' '); line creates a SPAN element with the initial content " " and returns it's element in "elem". Code: var ed = (tinymce.activeEditor || opener.tinymce.activeEditor);
if(ed)
{
var sel = ed.selection.getContent();
var range = ed.selection.getRng(true);
var elem = ed.dom.create('span', false, ' ');
elem.innerHTML = bbopen + sel + bbclose;
range.deleteContents();
range.insertNode(elem);
ed.selection.select(elem);
ed.focus();
return;
}
This code works, but not exactly as I want. For example, if I type "This is a test" and wrap code tags around it, I get this: But what I WANT is this: Also, if I select no text and hit the BBCode button, I get the open tag and the close tag, all highlighted. What I want in this case is the open tag, the close tag and the cursor IN BETWEEN them ready for text insertion. I'm thinking that I can take the range start and end offsets and move them to get what I want, but so far I've failed. One thing I DON'T want to have to do is create THREE spans... one for the open, one for the selection and one for the close. Trying to avoid that if possible. Any help will be greatly appreciated! Thanks! -- Roger Hi, I am trying to write a script to get my sprite to move to the next row once it reaches the last frame on it's current row. Here's my attempt so far; in the code below I want bird2 when it reaches frame 3 and spState(1) - this means first row - to switch to spState (2) second row. Code: if ($('#bird2'['current_frame']) == 3 && $('#bird2').spState(1)) {
$('#bird2').spState(2);
} else {
$('#bird2').spState(1);
}
Here's the code regarding the spState() Code: spState: function(n) {
$(this).each(function() {
// change state of a sprite, where state is the vertical
// position of the background image (e.g. frames row)
var yPos = ((n - 1) * $(this).height()) + 'px';
var xPos = $._spritely.getBgX($(this));
var bp = xPos + ' -' + yPos;
$(this).css('background-position', bp);
});
return this;
this is from http://www.spritely.net/ you will notice on this site that if you drag the slider to the left the bird sprites change direction, in fact they play the second row of frames. The reason I want my bird sprite to go automatically to the next row is because I am using video turned into individual frames and a png strip, and I am limited by the max width of png (8192px). see http://www.cranihum.com/ scroll down to see the bird on the rooftop. Each frame in that bird sprite is 80px wide and there are 93 frames. So I would like to include multiple rows to allow me to increase the number of frames. Up to 15 rows will be needed and after the last row it should go back to the first row. Perhaps a switch statement would be better than what I currently have. I am new to JavaScript and have been trying to pick up clues from http://www.w3schools.com I am very happy to learn and I hope to be prompted and pushed in the right direction. I hope my request is clear, please ask questions if not. Thank you Will Hi once again! Is it possible to detect was the mouse on the move or not in the moment when button is released ? I have a html form that uses AJAX to display an XML file for a live search box to appear underneath the search box while the user is typing. I want to be able to click on the links and for the data to be entered into the search box, kinda like on Google's main page. Someone mentioned to be about moving the text using javascript onclick, can anyone help with this?
Hey, I have a script which uses an array of numbers to represent their position in a div. its 5 by 5 like so: Code: tileMap = [ [1, 1, 1, 1, 1], [1, 1, 1, 1, 1], [1, 1, 1, 1, 1], [1, 1, 1, 1, 1], [1, 1, 1, 1, 1], ]; images = new Array(); images[1] = "no block"; images[3] = "brick.PNG"; Image[1] means you can move on the tile, 3 means you cannot (aka a collision). Now this is fine but i have issues regarding my movement of the image. I want to use WASD keyboard buttons which i can do using a CASE statement. But how do you make the image move Regarding Left/Right/Up/Down (also so that it stops moving when you stop holding down one of the keyboard buttons. I use this to detect the key button pressed: Code: function handleKeyMovement(keyValueDown)
{
switch(keyValueDown)
{
case 97: //A Move Left
//move it left
break;
case 100: //D Move Right
//move it right
break;
case 119: //W Move Up
//move it up
break;
case 115: //S Move Down
//move it down
break; }
}
p.s ideally i would like to move the said image by certain pixel amounts so it looks more smooth in movement. Is it possible? Hope you can help ! Right. I'm trying to create a little game (If you can call it that) where every time the user hovers over a <div> which contains a button, said <div> moves to a random point on the page. I've tried a way of moving the item and Googled extensively but have not yet come up with a way of doing it. This is my current code: Code: if(document.getElementById)
{
var carrier = document.getElementById(btnarea);
carrier.style.top = randomHeight + "px";
}
if(document.getElementById)
{
var carrier = document.getElementById(btnarea);
carrier.style.left = randomWidth + "px";
}
Which does not work. I hover over the <div> and the button, yet nothing happens. I can click the button, which seems to be the only thing working right now. I have a feeling the issue could be with another part of the code, but I wanted to see what you people thought first. Any ideas? You can see it working (Or not) at http://zeroerror.co.uk/public/clickme.php. Thanks in advance. |
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