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JavaScript - Are Onmouseover Html Attributes Bad Practice?
Which is considered best practice?
Code: <div onmouseover="doThis();">
myDiv.onmouseover = doThis;
myDiv.addEventListener("mouseover",doThis,false);
...or something else? Similar TutorialsHi Gurus, Please find the attached html that i am working on. this has 3 columns and the 3rd column is 'Show Comments' link. when I hover the link it should display the html page on top my existing page like a tooltip. For Example: In this forum, when hovered on each topic, the topic description is displayed as tool-tip. can anyone shed some light? Thanks! Ok, so I know the scenario is a bit absurd, but I am trying to cut my teeth on these objects. So my goal here is to figure out new things about the concept... I came up with the following to see if I could create a new (dynamically named) property for an object on the fly PHP Code: window.HTML=function(e,s,q){q?document.getElementById(e).innerHTML+=s:document.getElementById(e).innerHTML=s}; document.write('<div id="TestInfoDiv">Start</div>'); var ShowInfo = (function () { var TestInfo = {} , Loop = function () { HTML('TestInfoDiv','',false); for (var i in TestInfo) { HTML('TestInfoDiv' , i + ':' + TestInfo[i] + '<br />' , true); } var show = setTimeout(Loop , 100); }; Loop(); return { Info : function (i , v) { TestInfo = {i : v}; //New property is named 'i' value is correctly set to body width :( // return TestInfo = {i : v}; //Same result :( // TestInfo.i = v; //Same result :( } }; })(); ShowInfo.Info('bodyWidth',document.body.offsetWidth); Obviously this printed i:1123 and so forth -- but not bodyWidth:1123 Also, this did not update the value of the property at each iteration of Loop. Would there be a way to send document.boddy.offsetWidth to the function instead of it's value, so that I could re-test it on each pass? Essentially I'm trying to replicate the following in which I could view the contents of an array in real time for debugging, but using objects I would like to be able to add any test value to the property list. PHP Code: window.setInterval('SHOW_ARRAY(ChangedFiles);',200); ChangedFiles=[]; function SHOW_ARRAY(myArr){ HTML('ArrayDebug','') if(myArr){ for(var t in myArr){ for(var y in myArr[t]){ for(var u in myArr[t][y]){ HTML('ArrayDebug','<div>'+myArr[t]+'</div>',1); } } HTML('ArrayDebug',t+'<br />',1) } } } I know I don't need objects to accomplish this, remember: It's just a test scenario so that I can understand them better... I must be misunderstanding a fundamental aspect of javascript because I have been sitting here scratching my head for an hour trying to figure out why my code produces a nAn for the gpa calculation. I intended the calcutator to erase any entries that are not standard grades, and prompt the user to fill in blanks if there are any. I apologize if the code is too long. I think there is a probably a way to cut it down, so if someone could tell me how that would also be extremely helpful. P.S. the calculator is supposed to convert the letter grade to the gpa score (A-->4.0) so if someone could explain how it would be done in an array instead that would help. I tried to do it, but I couldn't get that to work. This way is functional albeit long. My main issue is the calculator's inability to calculate! Thank you for any responses. I cannot attach anything so I will include a pastebin link instead: http://pastebin.com/DfyR46p2 Hey there. I want to move a div around a page, and I do this by getting the original top and left values of a div, and then change them. But the problem is getting the original values; I checked online and thought that this would work: Code: var chart = document.getElementById(charDiv).style.top;
var charl = document.getElementById(charDiv).style.left;
alert('char_t:' + chart + ' char_l:' + charl + 'charDiv:' + charDiv);
charDiv is passed into the function (its the id of the div I want to move). I know that charDiv has a value by looking at the values of the alert() statement, but the values of chart and charl are empty. The alert simply outputs char_t: char_l: charDiv: charOne any help would be appreciated how about getting the attributes of the a tag? href and title and the innerhtml (actually the innerhtml has space on both ends)
Hi Guys, I'm new at JS. I need to remove TR elements from parent table but the problem is there are no table ID/Name Is it possible to perform it? Please see attach - i need remove red marked block... what scrip i have to use if i will put it to the green block? Thank you. hello Sir/Mam i have a piece of code here that creates a dynamic form.. Code: <script type='text/javascript' language='javascript'>
<!--
function createTextbox(){
var textboxtag = document.createElement("input");
textboxtag.setAttribute("name","username");
document.getElementById("form1").appendChild(textboxtag);
}
-->
</script>
<body>
<div id='div1'>
<button name='textbox' onclick='createTextbox()'>Textbox</button>
</div>
<div id='div2'>
<form id='form1' action='#' method='post'>
</form>
</div>
</body>
this code sets the "name" attribute to "username" automatically.. my problem is how to set the name attribute manually by the user after the dynamic textbox is created.. just like in visual basic where after you create a form e.g button or textfield, theres a side pane where you can change attributes like name, value, etc.. tnx for the time reading my post..sorry for my poor explanation of the problem..im new in javascript and trying to learn it all by myself.. Hi everyone, I'm currently in the process of making a spreadsheet like webpage and it all working fine... However I have been using setAttribute and removeAttribute in order to dynamically change a table cells onclick property. This of course does not work in IE7 etc and I've been banging my head against a brick wall trying to come up with a solution that will work in all browsers but I just can't seem to get it to work with using methods such as... Code: document.getElementById(myElementId).onclick = scriptToRun;
document.getElementById(myElementId).attachEvent('onclick',scriptToRun);
I get all sorts of not implemented, type mismatch errors when I try to use the above. Below is the setAttribute code which works. Code: document.getElementById("task_" + colName + studentId).setAttribute("onclick","showTaskDropDown('task_" + colName + studentId + "','" + studentId + "','" + colName + "','" + value + "','" + maxValue + "','" + trafficMaxValue + "','" + taskNumber + "')");
If anyone can see why the other methods aren't working and can provide a solution I'll be extremely greatful! I attempting to set attributes for all tags of a particular type.... I have a bunch of thumbnails <img> tags; when I wand over them I would like to show the corresponding large image with a script but the tags require onMouseOver events. I really don't feel like adding a bunch of onMouseOver="myShowScript" attributes to every img tag manually... my scripts aren't working... partly because I'm a newbie... I'm sure there is some fundamental concept about java and html I don't get... here's ONE of the versions that doesn't work.. I've tried a few things but I'm open to scrapping everything for a better way... I appreciate any direction you can offer... Code: function addAtts(){
var numberOf = document.getElementsByTagName("img");
for(i = 0; i < numberOf.length; i++){
numberOf[i].onMouseOver="myShowScript()";
}
}
I am looking to get a loop which runs through a series of divs (each with an attribute called "position" followed by 5 comma separated values). for each of these divs i need the 5 comma separated values (from position) to be assigned to variables. I have the rest of the code sorted out i just cannot get the original variables. Examples: divs look like this... Code: <div position="100,100,50,50,1"></div> There are no limits on the number of these divs but there will never be 0. What i want is something to look like this. For each div, var s = string of attribute (position) values (output:a,b,c,d,e) split string to create var a = a var b = b var c = c var d = d var e = e I from those 5 vars can do what i need. and i know that vars a,b,c,d,e,s will all be overwritten in when it comes to the next div... that is planned. how to search through siblings for shared attributes I have a a long list of links and I suppose Im going to apply a number of classes to each one [describing a number of attributes for each] and I want to do a conditional search probably in javascript/jquery so that when i hover over one of the links I highlight its relatives - those that have the same attributes. What Im having trouble wrapping my head around is the idea of classes to ID these custom attributes. The attributes are coming from a database converted to XML. In my Javascript I essentially want to say that for each link should the user mouseover or mouseclick for each of its sibling links if its sibling link share its attributes style or highlight these compliant siblings a certain way how do I do the 'if statement' without spelling out every possible attribute entry? I know in plain OOP Java how I could test for this but in that scenario I have access to these entries as fields in an object's instantiation. Help? thanks so much in advance I'm not really much of a javascript programmer, but I occasionally use javascript that I've found here and there. But I'm unable to find anything that helps me in what I'm trying to do now. I regularly use a snippet of code that pops up a small window to display an image or a very small html file. Using the window.open() function, I'm able to disable scrolling, resizing, etc., and size it to my needs. I'll have a window.close link somewhere on the page. But in my current project, my customer's page has several links related to other companies. When you click on the link, an that company's ad pops up in a small window. At this point, the viewer can simply close the window, or they should be able to click on the ad and be taken to that company's website. I'm able to have it close the window and open that new url in the parent browser window, but my website customer doesn't want their site to go away. They want the new company's website in a new window. Or I can simply NOT close the popup window, but now the new company's website is in a relatively small browser window, unable to scroll, resize, etc. Is there a way for me to somehow modify an existing window with an onclick directive - something similar to the window.open() function, OR open a new browser window with window.open() AND close the popup window? If I haven't made myself clear, let me know and I'll try to explain myself better. Thanks in advance for any help. Hi, I'm not even sure if that's the issue here, but I've isolated it and all the other code is working, so what I'm thinking is that if this: Code: function togglePoly(poly_num) {
if (document.getElementById('poly'+poly_num)) {
if (document.getElementById('poly'+poly_num).checked) {
gpolys[poly_num].show();
} else {
gpolys[poly_num].hide();
}
}
}
function createClickablePolyline(poly, html, label) {
gpolys.push(poly);
var poly_num = gpolys.length - 1;
if (!html) {html = "";}
else { html += "<br>";}
if (html) {
GEvent.addListener(poly,'click', function(point) {
if (!point) point = poly.getVertex(Math.floor(poly.getVertexCount()/2));
map.openInfoWindowHtml(point,html);
});
}
label = "<a href='javascript:GEvent.trigger(gpolys["+poly_num+"],\"click\");'>"+label+"</a>";
// add a line to the sidebar html
sidebar_html += '<input type="checkbox" id="poly'+poly_num+'" checked="checked" onclick="togglePoly('+poly_num+');">' + label + '<br />';
}
document.getElementById("sidebar").innerHTML = sidebar_html;
works here to hide/show a line, then this: Code: function show(category) {
for (var a=0; a<gpolylines.length; a++) {
if (gpolylines[a].mycategory == category) {
gpolylines[a].show();
}
}
for (var i=0; i<pts.length; i++) {
if (pts[i].mycategory == category) {
pts[i].show();
}
}
}
function hide(category) {
for (var a=0; a<gpolylines.length; a++) {
if (gpolylines[a].mycategory == category) {
gpolylines[a].hide();
}
}
for (var i=0; i<pts.length; i++) {
if (pts[i].mycategory == category) {
pts[i].hide();
}
}
}
// this variable will collect the html which will eventually be placed in the sidebar
function togglePoly(category) {
if (document.getElementById(category)) {
if (document.getElementById(category).checked) {
show(category);
} else {
hide(category);
}
}
}
function createClickablePolyline(poly, html, name,category) {
gpolys.push(poly);
var poly_num = gpolys.length - 1;
var category = lines[a].getAttribute("category");
midLineArrows(pts, category);
GEvent.addListener(poly,'click', function(point) {
if (!point) point = poly.getVertex(Math.floor(poly.getVertexCount()/2));
map.openInfoWindowHtml(point,html);
});
// add a line to the sidebar html
label = "<a href='javascript:GEvent.trigger(gpolys["+poly_num+"],\"click\");'>"+label+"</a>";
sidebar_html += '<input type="checkbox" id="'+category+'" checked="checked" onclick="togglePoly('+category+');">' + label + '<br />';
}
document.getElementById("sidebar").innerHTML = sidebar_html;
should work here to show/hide lines and arrows the difference of course being that the first code uses poly_num, which is taken directly from the Code: var poly_num = gpolys.length - 1; code (because it only needs to show/hide one line at a time) whereas the second uses the xml attribute "category" from here Code: var category = lines[a].getAttribute("category");
because it's attempting to hide and show a line with arrows on it (the arrows being in the pts array), both of which share the category attribute. It's not throwing up any major errors, but it's not working, either... any suggestions would be great... thanks in advance... Hi All I have a piece of script which makes a div slide out from the side of the screen with information on it. I can change the innerHtml etc no problem, but i have a problem with change .style attributes dynamically. My code: Code: var mystring = "height:500px";
var keyVal = mystring.split(":")
var slidingDiv = document.getElementById('slidingDiv');
slidingDiv.style.keyVal[0] = keyVal[1];
As you see above i get a value which i need to split() to get the key and value to use. So what i would like to see is: Quote: slidingDiv.style.height = 500px; But it does not work, as there is no such function as slidingDiv.style.keyVal[0]; How do i change this? I hope I've explained this thoroughly enough. Please ask if i need to explain further. Regards Marinus Hi, I'm having trouble with some flash players that don't abide by the style attribute of the div they're created in using Javascript. When the flash-players' source is hard-coded into the page source they render fine, but the more players, the more bloat as you can see in the source of the original page. Any help? Example: http://mcbryanmd.webs.com/Playertest.htm Original Page with old code: http://mcbryanmd.webs.com/ The problem code: Code: <script type="text/javascript">
function clv(obj){
var strst="http://static.livestream.com/scripts/playerv2.js?channel=";
var strnm=obj;
var strnd="&layout=playerEmbedWide&backgroundColor=0x000000&backgroundAlpha=.5&backgroundGradientStrength=0&chromeColor=0x000000&headerBarGlossEnabled=true&controlBarGlossEnabled=true&chatInputGlossEnabled=true&uiWhite=true&uiAlpha=0.5&uiSelectedAlpha=1&dropShadowEnabled=true&dropShadowHorizontalDistance=10&dropShadowVerticalDistance=10&paddingLeft=0&paddingRight=0&paddingTop=0&paddingBottom=0&cornerRadius=3&backToDirectoryURL=null&bannerURL=null&bannerText=null&bannerWidth=320&bannerHeight=50&showViewers=true&embedEnabled=false&chatEnabled=true&onDemandEnabled=false&programGuideEnabled=false&fullScreenEnabled=false&reportAbuseEnabled=false&gridEnabled=false&initialIsOn=true&initialIsMute=true&initialVolume=10&contentId=null&initThumbUrl=null&playeraspectwidth=4&playeraspectheight=3&mogulusLogoEnabled=false&width=100%&height=100%&wmode=window";
var clsrc=strst + strnm + strnd;
var pstrm=document.createElement('script');
document.getElementById('pcont').appendChild(pstrm);
pstrm.setAttribute("type","text/javascript");
pstrm.setAttribute("src", clsrc);
}
</script>
<button onclick="clv('random0')" onmouseover="this.style.color='#00FF00'"onmouseout="this.style.color='#FFFFFF'">random0</button>
<button onclick="clv('random1')" onmouseover="this.style.color='#00FF00'"onmouseout="this.style.color='#FFFFFF'">random1</button>
<button onclick="clv('random2')" onmouseover="this.style.color='#00FF00'"onmouseout="this.style.color='#FFFFFF'">random2</button>
<div id="pcont" style="margin-left:250px;display:;position:fixed;top:40px;right:0px;left:0px;bottom:0px;background-color:#CCCCCC;"></div>
Alright I know about the problems IE has, but I'm testing out an id that is titled "slideRecord1" and trying to move it. The functions work with Firefox for the onmouseover and onmouseout attributes. But IE doesn't support that. So I'm trying to do it manually in the Javascript, but it's still not reading it. Any help? Code: /* <![CDATA[ */
document.getElementById('slideRecord1').onmouseover = function(){slideRecord(1);}
function slideRecord(disc)
{
var record = "disc"+disc;
var y = 20;
document.getElementById(record).style.top = y + 'px';
}
function unSlideRecord(disc)
{
record = "disc"+disc;
var y = 0;
document.getElementById(record).style.top = y + 'px';
}
/* ]]> */
Hi Guys im new to javascript but i have got this code so far to work Code: <script type="text/javascript">
function do_something(e)
{
document.getElementById('imgholder') .style.background="transparent url('images/img2.jpg') no-repeat";
}
</script>
and it works with this Code: <div id="flash">
<div id="imgholder">
</div>
<div id="myController2">
<span class="jFlowControl2">No 1 </span>
<span class="jFlowControl2">No 2 </span>
</div>
<div id="mySlides2">
<div>
<a onmouseover="do_something(this)" class="vm" href="#" title="Vulnerability Management"></a>
<a class="grc" href="#" title="grc"></a>
<a class="pci" href="#" title="pci"></a>
<a class="gcs" href="#" title="gcs"></a>
<a class="pt" href="#" title="Penetration Testing"> </a>
<span class="jFlowNext2 NextFlash"> </span>
</div>
<div>
<span class="jFlowPrev2 BackFlash"> </span>
</div>
</div>
</div>
Currently the background changes on the 1st link hover. is it possible to have different images load on the hover of different a's? any help would be appricated I have been googling this for two days and am coming to the conclusion that the answer is no. Am I correct?
Hi I have a script that runs fine in FF, Chrome But in IE it does not work at all...(mouse over/mouseout) Would you please help me fix the problem... here is the code: Code: <script type="text/javascript">
var c=0;
var t;
var timer_is_on=0;
function timedCount()
{
document.getElementById('txt').value=c;
c=c+1;
t=setTimeout("timedCount()",1000);
}
window.onmouseout=doTimer;
function doTimer()
{
if (!timer_is_on)
{
timer_is_on=1;
timedCount();
}
}
function stopCount()
{
clearTimeout(t);
timer_is_on=0;
}
function descriptionKeyUp() {
if (timer === null) {
startTimer();
}
else {
clearTimeout(timestop);
}
timestop = setTimeout(stopTimer, 6000);
}
</script>
-----------------------
<form>
<textarea name="taskdesc" id="taskdesc" cols="45" rows="5"onmouseover="stopCount()" onkeyup="descriptionKeyUp()"></textarea>
<p>Time Spent on Other tasks:
<input type="text" name ="txt" id="txt" />
</p>
<p>Time Spent on Documenting:
<input type="input" name="seconds" id="timer" />
</form>
basically what it does is when user takes the mouse away from the form it counts the time...when user put the cursor in side the form...it stops counting...... I have created a scroll script that, when you mouse over the page, the scrolling stops, and it resumes when you mouseout. For some reason, my script messes up slightly when you have <p>, <a>, <span>, and <div> tags inside the main div. On that page, even if you are moused over the page, it will still try to scroll a tiny bit. This is because it thinks you have moved your mouse out of the page. I have tried adding mouseover and mouseout events to these tags to remedy the problem, but that didn't work. Here's a link to an example with nothing but text, and it works fine: http://www.myfsjournal.com/scroll2.php Here's the same page, but with stuff inside of <p> and <a> tags. However, it doesn't work quite right. http://www.myfsjournal.com/scroll1.php You can view all the code on my page, but here's the relevant part: Code: var timerIsOn = 1;
window.onload = function()
{
startScroll();
var marqueeDiv = document.getElementById("marqueeDiv")
if(navigator.appName != "Microsoft Internet Explorer")
{
if(marqueeDiv != null)
{
marqueeDiv.addEventListener("mouseout",function () {resumeScroll();},false);
marqueeDiv.addEventListener("mouseover",function () {stopScroll();},false);
}
}
else
{
if(marqueeDiv != null)
{
marqueeDiv.attachEvent("onmouseout",function () {resumeScroll();},false);
marqueeDiv.attachEvent("onmouseover",function () {stopScroll();},false);
}
}
}
function startScroll()
{
if(timerIsOn == 1)
{
//if we have scrolled to the bottom
if(getScrollY() >= document.documentElement.scrollHeight - document.documentElement.clientHeight)
{
window.scroll(0,0);
}
window.scrollBy(0,1); // horizontal and vertical scroll increments
scrolldelay = setTimeout('startScroll()',50); // scrolls every 100 milliseconds
}
}
function stopScroll()
{
clearTimeout(scrolldelay);
timerIsOn = 0;
}
function resumeScroll()
{
timerIsOn = 1;
startScroll();
}
function getScrollY()
{
var scrOfY = 0;
if( typeof( window.pageYOffset ) == 'number' )
{
//Netscape compliant
scrOfY = window.pageYOffset;
}
else if( document.body && document.body.scrollTop )
{
//DOM compliant
scrOfY = document.body.scrollTop;
}
else if( document.documentElement && document.documentElement.scrollTop )
{
//IE6 standards compliant mode
scrOfY = document.documentElement.scrollTop;
}
return scrOfY;
}
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