JavaScript - Need Help With Implementing Multiple Functions With Onclick Event. Unsure What To Do!

Hey guys,

I know that there are two ways to declare an event in javascript.

1.Inline ie: <a href="#" onclick="function_name(param)">Link</a>
2.Traditional ie: linkelement.onclick = function_name;

Now, how can the second method work with functions that have parameters??? Since we can't use parenthesis, how do we pass in the arguments?!

Hi,

New to javascript. Doing web page with ASP/VB.NET. Have text boxes for UI on page. Two command buttons - Submit (for db update) and Cancel. I need the Cancel button to prompt the user to verify cancellation. Need OK/Cancel buttons on alert. If user selects Cancel-no action. If user selects OK then I want the text boxes cleared of user text input and focus returned to first text box. I think this may be the code but do not know how to apply it.

function Clear()
{
var res=window.confirm("Please confirm cancellation-text boxes will be cleared");
if(res==true)
{
document.getElementById("StrtDte").value="";
document.getElementById("EndDte").value="";
document.getElementById("txtProjRegHrsAl").value="";
document.getElementById("txtProjOTHrsAl").value="";
document.getElementById("ddlRAS").focus();
}
}

Is this code valid or invalid for the events I need? How do I set it to fire when user clicks the ASP Cancel button?

Thanks,

John

Hello forum,
My name is juan and recently started html programming. I have a web page with a drop box with the name of states.
Code:

<option value="">Alabama</option>
<option value="">Alaska</option>

I can add a onclick="code here" to the tag so that when the drop box alabama is selected it triggers the onclick event.

Im using Ibox in order to have a image of the state open.

Code:

<a href="images/large/image_1b.jpg"  rel="ibox" title="alabama at 1024x450!"><img 
src="images/small/image_1.jpg" alt=""/></a>

the above is a <a> link tag correct? How do I go bout adding the above code into the onclick event?

Hello, can you help me work it out - I need a link to do two things at the same time - the main function of opening url and executing javascript. How can i do that?

Q1. write a function called countAS that will take a string as input (using a prompt dialog box,prompt the user or the string).the string must contain only a's,b's and c's e.g. "abccbbaa" or "aaabbbccc" if any other letters are present apart from the letters a b c, output an alert dialog box with an error message and prompt the user again to input a valid string.count the number of a's the numbers of b's and the numbers of c's entered and display the count for each as well as a total count of all the characters within the string .

for example if the string was abbcc output should be as follows:
the total count is 5 characters
The Number of a's is 1
The Number of b's is 2
The Number of c's is 2

Q2. write a code that uses an event handler to display an alert dialog box with the message 'hello to you all' when a user clicks a link in a html page which links to the school of computing website.

Hi I would like to use javascript to control what tooltip displays when a tab is rolled over depending on which tab was clicked.

Code:

  <li id='1tab_1a' class='selected'><a id='1link_1a'  title="Customer Info Screen"><span >Customer Info</span></a></li>
  <li id='1tab_1b' ><a id='1link_1b'  title="Order Detail"  ><span>Order</span></a></li>
 
 <li id='1tab_1c' ><a id='1link_1c'  title="Phone Detail" ><span>Phone:  7093521232</span></a></li>

For example when the Customer Info tab is selected I would like the tooltips to be like above but when Order is the tab selected I would like the
tooltip to say Customer Info Detail, Order Detail Screen, and Phone Detail. How could I use an onclick event to control what tooltip is being
displayed depending on which tab is selected? I have about 20 sets of customer info and sometimes not everyone contains all of the tabs and I
would also like to be able to add more customers.

hi,
i need to be able to take the values from two text boxes and change the location of a sprite on my canvas, i've searched the internet and it doesnt really explain how to do it for me. here is my code:

x: <input type="text" name="x" id="x"/><br />
y: <input type="text" name:"y" id="y"/><br />
<input type="submit" value="Submit" onClick="ChangeCo()" /><br />

function ChangeCo()
{
}

and i need the function to take the x and y values from the text boxes and change the values of my variables:

var block_x;
var block_y;


block_x = 290;
block_y = 70;

Thankyou in advance

I was trying to help someone on another forum and seem to have run into a brick wall.

The main problem that has got me stumped at the moment is that clicking on the images in the 1st tab work fine.
However the subsequent tab selections and clicks do not change the "bigImage" correctly (not at all).
Perhaps some other more experienced forum members can identify what I doing wrong at this time.

I believe it is in my set-up of the onclick events in the "onload=" section, but I not the best at this event stuff yet!
Code:

  var sel, tmp, elem;
  var j=0;
  for (var i=0; i<imgGroupArray.length; ++i) {
    sel = document.getElementById('imgGroup'+i).getElementsByTagName('img');
    while (elem=sel[j++]) { elem.onclick = function() { setBigImage(this.src); } }
  }

Here is the full code that 'almost' works:
Code:

<!DOCTYPE HTML>
<html>
<head>
<title> Tab Gallery </title>

<style type="text/css">
li { display:inline; list-style-type:none; border:1px solid blue; margin:3px; }
.imgBlock { display:none; }
</style>

<script type="text/javascript">
// From: http://www.webdeveloper.com/forum/showthread.php?t=250787

var baseURL = 'http://www.nova.edu/hpd/otm/pics/4fun/';
var imgGroupArray = [
    ['11.jpg','12.jpg','13.jpg','14.jpg','15.jpg'],
    ['21.jpg','22.jpg','23.jpg','24.jpg','25.jpg'],
    ['31.jpg','32.jpg','33.jpg','34.jpg','35.jpg'],
    ['41.jpg','42.jpg','43.jpg','44.jpg','45.jpg'],
    ['51.jpg','52.jpg','53.jpg','54.jpg','55.jpg'],
    ['61.jpg','62.jpg','63.jpg','64.jpg','65.jpg']  // NOTE: No comma after last entry
];

function tabGroup(which) {
  var sel = document.getElementById('imgGroup').getElementsByTagName('div');
  for (var i=0; i<sel.length; ++i) {
    sel[i].style.display = 'none';
  }
  var tmp = 'imgGroup'+which;  // alert(tmp);
  document.getElementById(tmp).style.display = 'block';
}

function setBigImage(info) {    // alert(info);
  document.getElementById('bigImage').src = info;
}
window.onload = function() {
  var img;
  for (var i=0; i<imgGroupArray.length; ++i) {
    for (var j=0; j<imgGroupArray[i].length; ++j) {
      img = document.createElement('img');
      img.setAttribute('src', baseURL+imgGroupArray[i][j]);
      img.setAttribute('height','100px');
      img.setAttribute('width','75px');
      document.getElementById('imgGroup'+i).appendChild(img);
    }
  }

// Following modified from:
// http://www.codingforums.com/showthread.php?t=102896&highlight=addevent+onclick
  var sel, tmp, elem;
  var j=0;
  for (var i=0; i<imgGroupArray.length; ++i) {
    sel = document.getElementById('imgGroup'+i).getElementsByTagName('img');
    while (elem=sel[j++]) { elem.onclick = function() { setBigImage(this.src); } }
  }

  tabGroup(0);
}

</script>

</head>
<body>
<div id="tabMenu">
 <div style="float:left">
  <li onclick="tabGroup(0)">Tab 1</li>
  <li onclick="tabGroup(1)">Tab 2</li>
  <li onclick="tabGroup(2)">Tab 3</li>
  <li onclick="tabGroup(3)">Tab 4</li>
  <li onclick="tabGroup(4)">Tab 5</li>
  <li onclick="tabGroup(5)">Tab 6</li>
 </div><br>
 <div id="imgGroup"
  style="width:300px; height:300px; border:1px solid red; float:left">
  <div id="imgGroup0" class="imgBlock"></div>
  <div id="imgGroup1" class="imgBlock"></div>
  <div id="imgGroup2" class="imgBlock"></div>
  <div id="imgGroup3" class="imgBlock"></div>
  <div id="imgGroup4" class="imgBlock"></div>
  <div id="imgGroup5" class="imgBlock"></div>
 </div>
 <div id="bigImageDiv"
  style="width:250px; height:300px; border:1px solid red; float:left;">
   <img id="bigImage" src="" alt="bigImage here!">
 </div>
 <br style="clear:both">
</div>
</body>
</html>

I'm having an issue where a programmatic click event is not behaving the same way the cursor click event is. A cursor click returns the correct object from GetObject(). The programmatic click triggered by a USB device is returning undefined from GetObject(). How can this be resolved?


Edit: It appears that it does not recognize eval(document.getElementById(gButtonList[gButtonId])).onclick(); as an event. Why is this? How can I get it to recognize it?

Edit2: Resolved it myself. See green text below.

TestPage.htm:
Code:

<script language="JavaScript" src="../bin/USBHelperFile.js"></script>
<script language="JavaScript" type="text/JavaScript">

function BuildButtons()
{
    for (var i = 0; i < testArray.length; i++)
    {
        // Create Div  [Buttons created programmatically] 
        var divNode = document.createElement('div');
        divNode.id = 'div' + i;
        divNode.onclick= ClickFunction;
         etc... 
    }
}

function ClickFuntion(nodeButtonNum)
{
    alert(GetObject()); 
     Returns the index for a cursor click. Returns undefined for
    the programmatic click triggered by the USB device 
}


function GetObject()
{
    var node = event.srcElement;
    return node;
}
</script>

USBHelperFile.js:
Code:

 This JS file works with a USB hardware device that can navigate
through divs and click them when they have focus. 

function HelperFunction(keyCommand)
{
    switch (keyCommand)
    {
        case: "click":
             // eval(document.getElementById(gButtonList[gButtonId])).onclick();
             var target = eval(document.getElementById(gButtonList[gButtonId]));
            target.fireEvent("onclick"); 
            break;
    }
}

here the deal ,,I've solved all but this problem in my script
i have my page setup with 1 iframe and the main html
the code below is exactly how the page will show up in the iframe, you can copy and paste the whole thing and save it as a htm file to view if needed..
I need a way to catch the clicks that happen within the iframe but from the main section of the page..heres why!
this is inserted at the top of the page if(top.location==self.location){top.location="RefESI_search.asp";} just above top.document.reset.RefCat.value=

I can get the page to load even with this in the iframes ..but for the purposes of this i left it out so the page would load ok for anyone thats gonna try and help . theres only 2 links in the code.. hopefully whatever will hopefully solve this problem will be able to tell which links were clicked,and i can can point them to the apropriate links.

I've looked thru alot of the threads so i know there are some extremely brite ppl in here that can knock this problem out of the ball park very easily.. you can grab the styles sheet from here https://www.docs.sony.com/reflib/Style_esi.css

Code:

<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<title>Ref_Lib_Results</title>
<link rel="stylesheet" type="text/css" href="home.css"/>
<script language="javascript">
 
  top.document.reset.RefCat.value="Home Receiver";
  top.document.reset.NarrowRef.value="Good";
  top.document.reset.criteria.value="stra";
  top.document.reset.searchscope.value="model";
  top.document.reset.companyscope.value="SONY";
  top.document.reset.company.value="SONY";
  if(""==""){top.reset();}
	function popUp(URL,Name) {
		var day = new Date();
		var id = "page" + Name;
		window.open(URL, id, "toolbar=1,scrollbars=1,location=0,statusbar=1,menubar=0,resizable=1,width=600,height=600");
  }
  
	function launchjsmanuals(flag, x, y, z, id) {
		//var myTypeLib = new ActiveXObject("Scriptlet.Typelib");
		//var GUID = new String(myTypeLib.guid).substr(1,8);
		//var endguid = new String(myTypeLib.GUID).substr(25,10);
		if((x.indexOf("CHM")!=-1) || (x.indexOf("chm")!=-1)){
			alert("You will be prompted to download a file\n\nClick Open - Do NOT click Save");
		}
		var whnd = "page" + id; //+ GUID + endguid;
		var URL = '_manualusage.asp?flag='+flag+'&manual=' + x + '&user=' + y + z + '&manualid=' + id;
		if(flag!=""){
		  whnd = window.open(URL,whnd, "toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=560,height=600");
		}else{
		  whnd = window.open(URL,"Loader", "toolbar=0,scrollbars=1,location=0,statusbar=0,menubar=0,resizable=1,width=560,height=600");
		}
  }
  function emailit(id, url,name,type,filesize,model,email,custname,cs3event,user){
	var namestring = name;
	var re = new RegExp('&','gi');
	namestring = namestring.replace(re,'and');
	name = namestring;
    var xurl = "/srvs/common/email.asp?id="+id+"&emailurl="+url+"&title=" + name + "&type="+type+"&model=" + model + "&filesize=" + filesize + "&email=" + email + "&custname=" + custname + "&convid=" +cs3event + "&user=" + user;
    popUp(xurl,id);
  }
  function NarrowSearch(what,value,cat){
    switch(what){
    	case "Category":
    	  parent.document.SearchForm.RefCat.value=value;
    	  parent.document.SearchForm.NarrowRef.value="Good";
    	  parent.document.SearchForm.submit()
    	  break;
    	case "Model":
    	  if("Home Receiver"!=""){
    	    parent.document.SearchForm.RefCat.value="Home Receiver";
    	  }
    	  parent.document.SearchForm.criteria.value=value;
    	  parent.document.SearchForm.searchscope.value="model";
    	  parent.document.SearchForm.NarrowRef.value="Good";
    	  parent.document.SearchForm.submit()
    	  break;
    	case "ONLY":
    	  parent.document.SearchForm.criteria.value=value;
    	  parent.document.SearchForm.searchscope.value="model";
    	  parent.document.SearchForm.RefCat.value=cat;
    	  parent.document.SearchForm.NarrowRef.value="Only";
    	  parent.document.SearchForm.submit()
    	  break;
    	case "ALL":
    	  parent.document.SearchForm.criteria.value=value;
    	  parent.document.SearchForm.RefCat.value=cat;
    	  parent.document.SearchForm.NarrowRef.value="ALL";
    	  parent.document.SearchForm.submit()
    	  break;
    }
  }
</script>
</head>
<body>
<div id="results">
<div style="height: 400px;border-bottom:1px solid black;" 
class="modelblock">
<div style="margin-left:20px; margin-right:15px; margin-top:10px; font-size:10pt">
<span style="float:Right;margin-top:10px;text-align:right">
<table border=0 cellpadding=0 cellspacing=0><tr><td>
<div style="background:silver;color:black;font-size:10px;padding:2px;border:1px solid gray;cursor:pointer" onclick="javascript:NarrowSearch('ALL','stra','Home Receiver')">Display All Models</div>
</td><td>&nbsp;</td><td><div style="width:40px;background:silver;color:black;font-size:10px;padding:2px;border:1px solid gray;cursor:pointer;text-align:center" onclick="javascript:history.go(-1)">Back</div></td></tr></table></span><b>Your search of "<font color=green>stra</font>" matches 66 Models in the Home Receiver category.</b><br><br>Please select the specific model to continue:<table border=0 cellpadding=0 cellspacing=2><tr><td><a class="modellink" onMouseOver="this.className='modellinkhover'" onMouseOut="this.className='modellink'" onclick="javascript:NarrowSearch('ONLY','STRAV1000','Home Receiver')"><b>STRA</b>V1000</a></td><td width=15px></td><td><a class="modellink" onMouseOver="this.className='modellinkhover'" onMouseOut="this.className='modellink'" onclick="javascript:NarrowSearch('ONLY','STRAV1010','Home Receiver')"><b>STRA</b>V1010</a></td><td width=15px></td></tr></table</div></div></div>

<iframe name="Loader" id="Loader" src="blank.htm" style="display:none;height:150px;width:100%;border:1px solid silver"></iframe>
<a onclick="document.getElementById('Loader').style.display='';">*</a>
<script language="javascript">
  //alert(parent.IQ.location.href);

</script>
</body>
</html>

I've got a checkbox that, when clicked, displays new text inputs. However, when I "uncheck" the box, the fields don't disappear unless I reload the entire page. What code can I add to reset the box to null when it is unchecked?

Here's the function code I have:
Code:

<script>
function showUserReg() {
	document.getElementById("userReg").style.display = "inline";
		}
</script>

And here's the inline code:
Code:

<input type="checkbox" name="additional" value="userRegister" onclick="showUserReg()"/> Yes! Register me now!<br/>

<span id = "userReg" style="display:none">
<table class="nobord" align="center">
<tr>
<td>Choose a username:</td>
<td><input type="text" name="username" size="35"/></td>
</tr>
<tr>
<td>Choose a password:</td>
<td><input type="password" name="password" size="35" maxlength="20"/></td>
</tr>
<tr>
<td>Confirm password:<font color="red">*</font></td>
<td><input type="password" name="password" size="35" maxlength="20"/></td>
</tr>
</table>		
</span>

Thanks for any help.

I assum the following html code:

<div id="id1" onclick="click()">A<div>
<div id="id2" onclick="click()">B<div>


Do you know how to get ID = id2 when I onclick on A?

Hi Everyone,

How would i add an avent listener to change the source of an image? I have added the image to a canvas element through javascript using the code below.

Code:

var start = new Image();
start.src = "start.jpg";
ctx.drawImage(start, 50, 50);

Thanks!

Is it possible to have an onclick event on a readonly input field? I want to avoid the mouseover event.

I have identical code in my index that works, so I'm just guessing the error is somewhere else, I know IE is not the best target to aim for - but I really want this to work in the windows default browser....

Here is the php page...
PHP Code:
<HTML>
    <HEAD>
        <TITLE>
            Family Home Page
        </TITLE>
        <SCRIPT TYPE="text/javascript" SRC="AddFamilyMemeber.js">
        </SCRIPT>
    </HEAD>
    <BODY>
        <TABLE>
            <TR>
                <TD>Father:</TD>
                <TD>
                    <SELECT ID="Father">
                        <?PHP
                            $con=mysql_connect("localhost","XXXX","XXXX");
                            if (!$con)
                            {
                                die('Could not connect: '.mysql_error());
                            }
                            mysql_select_db("XXXX",$con);
                            $result=mysql_query("SELECT * FROM FamilyMembers");
                            while ($row=mysql_fetch_array($result))
                            {
                                echo "<OPTION VALUE=\"".$row['ID']."\">".$row['FirstName']." ".$row['MiddleName']." ".$row['LastName']."</OPTION>";
                                echo "<BR/>\n";
                            }
                            mysql_close($con);
                        ?>
                    </SELECT>
                </TD>
            </TR>
            <TR>
                <TD>Mother:</TD>
                <TD>
                    <SELECT ID="Mother">
                        <?PHP
                            $con=mysql_connect("localhost","XXXX","XXXX");
                            if (!$con)
                            {
                                die('Could not connect: '.mysql_error());
                            }
                            mysql_select_db("XXXX",$con);
                            $result=mysql_query("SELECT * FROM FamilyMembers");
                            while ($row=mysql_fetch_array($result))
                            {
                                echo "<OPTION VALUE=\"".$row['ID']."\">".$row['FirstName']." ".$row['MiddleName']." ".$row['LastName']."</OPTION>";
                                echo "<BR/>\n";
                            }
                            mysql_close($con);
                        ?>
                    </SELECT>
                <TD>
            </TR>
            <TR>
                <TD>FirstName:</TD>
                <TD><INPUT TYPE="text" ID="FirstName"/></TD>
            </TR>
            <TR>
                <TD>MiddleName:</TD>
                <TD><INPUT TYPE="text" ID="MiddleName"/></TD>
            </TR>
            <TR>
                <TD>LastName:</TD>
                <TD><INPUT TYPE="text" ID="LastName"/></TD>
            </TR>
        </TABLE>
        <BUTTON TYPE="button" ONCLICK="Submit()">Submit</BUTTON>
        <BUTTON TYPE="button" ONCLICK="Abort()">Abort</BUTTON>
    </BODY>
</HTML>

and here is the javascript that works in the index but not here...
Code:

function Abort()
{
	document.location="AddFamilyMember.php";
};

When I load the page everything looks ok, but click on the abort button, and all that happens is that the little error symbol pops in the lower left of IE. The names of the two files are "AddFamilyMember.php" and "AddFamilyMember.js".

Sorry, but I honestly can't see where the problem is....