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JavaScript - Trigger A Function
I have a basic function:
function Notice() { var selectedCountry = CheckoutForm.elements["shipping-country"].selectedIndex; if (selectedCountry != 'United States') { alert('You are outside the US'); } } I have a select control with id "shipping-country": <select name="shippingCountry" id="shipping-country" > <option value="AF">Afghanistan</option> <option value="AL">Albania</option> ... </select> How can I trigger my function on selection change if I don't have access to html code or the server side code that generated the select control? typically I would just add onchange="Notice();" , but this option is out of the out of the question for the above reason. Any help would be appreciated. Similar Tutorialshow would you make a function trigger a other function?
I just wrote an essay to discover it had logged me out and I lost everything. Grrrrrrr. Here goes again, simplified this time. I've got a sticky footer at the bottom of the page and a spry collapsible panel which expands to reveal content on mouse over. The problem I'm facing is that the page doesn't scroll down with it, only the scroll bar gets larger to accommodate for a manual scroll down. This is kind of useless because the user might not even realise that there's extra content there in the first place if it's not automatic. My question is, what's the best javascript code to use to automatically scroll the page down when the spry tab is opened and where would I insert it? I've tried all morning with no success so far! Thanks, Nick, I'm copy pasting this post this time round, I don't trust this website now Hey everyone, I'm a NOOB, yeah, its hard at the beginning but you have to start somewhere right? Anyway I'm currently building a website that incorporates JavaScript, ActionScript, and the usual CSS and XHTML, but I've run into a bit of a snag. Our wishes for this grass roots web page was to add Ariel Flesler's ScrollTo jQuery plugin to our navigation, to dynamically slide our entire pages from left to right, right to left, upon the users choice. But, our navigation buttons, on our homepage in particular, are within a SWF file. Now is it possible to trigger the ScrollTo effect from buttons within a SWF? If not, can you provide a alternate solution to this dilemma? Thank you all, and I'm happy to be a new student of this community. Hello, I need your help. I basically need, when the enter button is pressed on the keyboard to trigger a button. Currently, my code works but it just refreshes the page and does not actually trigger the desired button: Code: //HERES MY CUSTOM BUTTON: <BUTTON TYPE="submit" onMouseOver="goLite(this.name)" onMouseOut="goDim(this.name)" onclick="javascript:v7_search()" CLASS="btn_std" NAME="btn_search" > ? Search </BUTTON> Here's the code to make the enter button work: Code: <form name="frmIMTS"
onkeydown="javascript:if (event.which || event.keyCode){if ((event.which == 13) || (event.keyCode == 13)) {document.getElementById('btn_search').click();}};"
>
Any help with this is greatly appreciated. Cheers, J Tonight is one of those nights - which seem to be coming more often - where I just can't seem to do anything right. Here is the menu I'm using embedded in HTML: Code: <td width="40%" align="center"><font color="#000099"><b> <select id="Aircraft"> <option value="0">N148LH</option> <option value="1">N149LH</option> <option value="2">N150LH</option> <option value="3">N151LH</option> <option value="4">N152LH</option> <option value="5">N153LH</option> <option value="6">N155LH</option> <option value="7">N156LH</option> <option value="8">N157LH</option> <option value="9">N159LH</option> <option value="10">N162LH</option> <option value="11">N163LH</option> </select></b></font></td> Now I want to use that code to trigger default values for my Empty Weights. This is what I have and isn't working: Code:
var selectmenu=document.getElementById("Aircraft")
if (Aircraft=0) {
df.ew.value = 1569.41;
df.ew_mom.value = 135909.2;
}
if (Aircraft=1) {
df.ew.value = 1570.11;
df.ew_mom.value = 135929.76;
}
Any help is appreciated. If anyone is interested the page this is on is here. <area shape="rect" coords="7,24,154,40" href="javascript:triggerCheckout()"> <area shape="rect" coords="7,24,154,40" href="javascript:triggerCheckout();"> <area shape="rect" coords="7,24,154,40" onClick="triggerCheckout()"> <area shape="rect" coords="7,24,154,40" onClick="triggerCheckout();"> None of these works. Why not? How can i link this hotspot area with a javascript function? I am quite unexperienced in javascript (my only related experience is work with actionscript), so this problem is likely extremely simple. I am trying to alter a bit of code from a Firefox Jetpack extension (ClicktoFlash, if that helps) to suit my needs, and am having some trouble executing a time based event. The pertinent section of the extension's code is as follows: Code: placeHolder.click(function(eventObject){
$(this).replaceWith(jQuery.data( placeHolder, "myEmbed") );
});
The bit of code executed within the function is what I wish to maintain, but I want the code to instead be executed within a certain timeframe. My makeshift attempt to alter the code read like this: Code: var currentTime = new Date();
var hour = currentTime.getHours();
if((hour >= 2) && (hour < 7)){
$(this).replaceWith(jQuery.data( placeHolder, "myEmbed") );
};
This didn't work quite like I had hoped (though I think the code itself is solid), and I think under the circumstances I might need to replicate the placeHolder.click() segment while 7>hour>=2 for the code to execute properly; however, I am having quite a bit of trouble trying to do this. In short, is it possible to trigger a button press without the mouse ever clicking the button, or is there a glaringly apparent easier solution that I'm missing? Thanks in advance. Hi. I'm working on a usability issue on a website. I have a jquery accordion slider, each slide has a link to a category. Now what happens is that when I go to the category page by clicking on a slider, when the page loads, the sliders always opens the first slide. For example, if I click on the third slide, I would like that slide to be open when the page loads. This is similar to the :current I believe. I think to solve what I need I must trigger a click on the third slide that third slide page opens. I know I need a reference for a condition, so I have ID'd my body through this php code were it gets the page name from the url into variable $page and then into do body's ID: PHP Code: <?php $page = $_SERVER['REQUEST_URI']; $page = str_replace("/","",$page); $page = str_replace(".php","",$page); $page = str_replace("?s=","",$page); $page = $page ? $page : 'default' ?> <body id="<?php echo $page ?>"> Now I've been trying through Javascript to get the variable from php and trigger a click on the slide of the category it is opening: PHP Code: <script type="text/javascript"> var bodyid = "<? $page ?>"; if (bodyid == "energy") { $("document").ready(function() { setTimeout(function() { $("ul#accordion li:second-child).trigger('click'); },10); }); } </script> This is not working and I don't really know what's wrong and how to solve or search for help. Does anyone understand what I'm trying to do here? Thank you. First, I will state that I am totally inexperienced in JavaScript. I have a web site application written in VB.net and asp. The main page uses JavaScript to load a popup page that performs multiple tasks. The main page accepts a variety of incoming messages, only SOME of which need to be passed to this popup page for processing. I found an ugly way to pass the message to the popup by placing it in a Session variable. Now I need to cause it to be handled. I see two possibilities, and I do not have a clue how to implement either. Either one would be great: 1. In the main page, trigger a subroutine in the popup, using JavaScript. OR 2. In the popup, establish a trigger any time that Session variable changes. Thanks in advance for any help on this. Hello, I have this onchange event that occurs after user selection of a dropdown menu. When a user makes a selection it queries the database and delivers some data. The value of the dropdown is stored in a database, but the problem is when the page is refreshed the delivered data disapears, only reappearing if you change the dropdown. How can I make the onchange event run when the page loads so that if there is already a selection, the database data will always be there, only to change if the user changes the selection? Here is the JS: Code: <script type="text/javascript">
function showCustomer(str)
{var xmlhttp;
if (str=="")
{document.getElementById("txtHint").innerHTML="";
return;}
if (window.XMLHttpRequest)
{// code for IE7+, Firefox, Chrome, Opera, Safari
xmlhttp=new XMLHttpRequest();}
else
{// code for IE6, IE5
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");}
xmlhttp.onreadystatechange=function()
{if (xmlhttp.readyState==4 && xmlhttp.status==200)
{document.getElementById("txtHint").innerHTML=xmlhttp.responseText;}}
xmlhttp.open("GET","getcustomer.asp?q="+str,true);
xmlhttp.send();}
</script>
And the onchange line: Code: <SELECT Name=""customers"" id=""customers"" onchange=""showCustomer(this.value)""> Etc... Please ignore the double sets of quotes. I have some code that will check a users screen resolution and open a new window with a particular version of my website in, I have several sites for different page sizes. But when this code runs in Safari the pop-up is blocked so I would like the image on my page to be a button that runs the code to open the 'correct' window (based on the screen res) and as a button is launching the new window Safari should be okay about it. Unless I am doing something wrong? http://www.meta.projectmio.com/pop.html But how do I modify the code to do this, I'm hopeless? Thanks. Code: <fieldset class="submit" style="padding-left: 200px;">
<?php if ($site_exist >= 1){
echo "<input type=\"submit\" name=\"submit\" value=\"Update\">";
} else { echo "<input type=\"submit\" name=\"submit\" value=\"Submit\">";} ?>
<!-- This is the button I am having trouble with. -->
<input type="button" name="delete" value="Delete"
onClick="return confirmSubmit()">
</fieldset>
</form>
<script type="text/javascript"><!--
function confirmSubmit(){
var agree=confirm("Are you want to delete this site from our index?");
if (agree) return true ;
else return false ; } // -->
</script>
Not entirely sure which forum this should go in, since the problem could probably be fixed with HTML, PHP or Javascript. Anyway, I have the confirmation window working. What I need is for the button to post a variable (siteDelete = 'true') when it is pressed. I would prefer to do that part without javascript, but I want the data to be posted after and only after the confirmation window returns true. I can do that with a submit button, but I'm not sure what code to use and where to use it when using a non-submit button. I have a video on a page, which on a pc or mac, will play inside a standard flash player. On the iphone, I have setup javascript to detect iphone / ipod, and replace the flash player with an embedded m4v file: Code: if((navigator.userAgent.match(/iPhone/i)) || (navigator.userAgent.match(/iPod/i))) {
$('div#vid').empty('');
$('div#vid').html('<div ontouchstart="incrementHitcount()"><embed src="http://www.gridcity.co.nz/uploaded/images/'+cid+'_bg.jpg" href="http://www.gridcity.co.nz/uploaded/videos/'+cid+'.m4v" type="video/x-m4v" rel="nofollow" target="myself" width="'+vidwidth+'" height="'+vidheight+'" scale="1" id="iphone"></embed><div>');
}
So far so good. I also want to trigger a simple onclick which makes an ajax call a remote PHP file. I have tried ontouchstart instead (see above code) but still no luck. If I add the onclick to a static image rather than an embed instance, it works fine. But with the embedded video, it's as if the video blocks the onclick event for javascript to pickup. Does anyone know a way around this? Hi, I am facing a problem in passing replace() function as an argument in user defined java function, can any one help me how to resolve it? intention is to pass a file path to my user defined function, but before passing the path i want to replace the character '\' to '\\' I am posting my javascript function he <a href="#" onclick="OpenDocPreview('<%# Eval("PATH")%>'.replace(/\\/g,"\\\\"), '<%# Eval("Filename")%>')"><%# Eval("DocTitle") %></a> function OpenDocPreview(url, docname) { alert('message from search base : ' + url + ' ' + docname); } thank you, I was working on a tutorial for some ajax uploading stuff and I ran across a new function syntax I don't recognize. I am not a Javascript pro, but I am not a newbie either. here is the code I am working on: Code: function handleFileSelect(e){
var files = e.target.files;
var output = [];
for(var i=0,f;f=files[i];i++){
if(f.type.match('image.*')){
var reader = new FileReader();
reader.onload = (function(theFile){
return function(e){
var span = document.createElement('span');
span.innerHTML = ['<img class="thumb" src="',e.target.result,'" title="',theFile.nbame,'" />'].join('');
document.getElementById('list').insertBefore(span,null);
};
})(f);
reader.readAsDataURL(f);
}
}
document.getElementById('list').innerHTML = '<ul>'+output.join('')+'</ul>';
}
document.getElementById('files').addEventListener('change',handleFileSelect,false);
To be a little more clear, the code in question is that is the very middle. The syntax I don't understand is: Code: class.event = (function(arguments){
//stuff you put in a function...
})(more Arguments?);
I tried to customize a simple one to learn for myself and I wrote this: Code: var a = 'A';
var b = 'B';
test = (function(t){
alert(t);
alert(b);
})(b);
test(a);
The browser would alert 'B' and that's it. The console would tell me that 'test is not a function.' OK, so I am confused. The topmost code works. What I am wondering is what the syntax is called for creating a function (or event listener?) that way, and how it works. Although if I new what it was called I could just google how it works. I found this script, and it works great: Code: <script type="text/javascript">
function disable(element)
{
var input = document.getElementById(element).getElementsByTagName("input");
for(var i = 0; i < input.length; i++)
{
input[i].setAttribute("disabled","true");
}
}
</script>
I tried to make the inverse by simply reversing the setAttribute() like so: Code: <script type="text/javascript">
function enable(element)
{
var input = document.getElementById(element).getElementsByTagName("input");
for(var i = 0; i < input.length; i++)
{
input[i].setAttribute("disabled","false");
}
}
</script>
But that didn't do it. Can someone show me why, and how to fix it? Here's the sample form which I'm trying to test it on: Code: <form>
<input type="radio" name="test" onclick="disable('D1')" /> disable<br/>
<input type="radio" name="test" onclick="enable('D1')" /> enable<br/>
<fieldset id="D1">
<input class="" type="text" value="test value1" /><input class="" type="text" value="test value2" /><br/>
<input class="" type="text" value="test value3" /><input class="" type="text" value="test value4" /><br/>
<input class="" type="text" value="test value5" /><input class="" type="text" value="test value6" /><br/>
</fieldset>
</form>
Edit: The ultimate goal which I'm working toward now (step by step =) is to have a form more like: Code: <form>
<input type="radio" name="test" onclick="disable('D1')" />
<fieldset id="D1">
<input class="" type="text" value="test value1" /><input class="" type="text" value="test value2" />
</fieldset>
<input type="radio" name="test" onclick="disable('D2')" />
<fieldset id="D2">
<input class="" type="text" value="test value3" /><input class="" type="text" value="test value4" />
</fieldset>
<input type="radio" name="test" onclick="disable('D3')" />
<fieldset id="D3">
<input class="" type="text" value="test value5" /><input class="" type="text" value="test value6" />
</fieldset>
</form>
And have the fieldsets enable and disable according the selection of the radio buttons. Also, the fieldsets (and their ID's) will be dynamically generated via PHP Thanks-a-bunch, ~ Mo Hi All, I'm trying to convert an anonymous function to a real function (nesting is getting out of hand), however the msg object becomes undefined after conversion. Here is the converted anonymous function which fails: https://gist.github.com/2587613 and here is the original anonymous function which works: https://gist.github.com/2587667 Any help would be greatly appriciated i keep getting error Call to undefined function codeandurl() below is my code PHP Code: <?php $value= strip_tags(get_field('link',$post)); $resultid=get_field('resultid',$post); codeandurl($resultid,$value); ?> <div id="result"></div> <script type="text/javascript"> function codeandurl(resultid,url){ $( "#result" ).text(resultid); $( "#result" ).dialog({ modal: true, buttons: { Ok: function() { $( this ).dialog( "close" ); } } }); window.open(url); return false; } </script> <p> <script type="text/javascript">// <![CDATA[ var metrics = { "mm" : 1, "cm" : 10, "m" : 1000, "inch" : 25.4, "foot" : 304.8 }; function convert(num, dec){ var val = document.getElementById("fromVal").value; if(isNaN(val)){ return } function roundNumber(num, dec) { var result = Math.round( Math.round( num * Math.pow( 10, dec + 1 ) ) / Math.pow( 10, 1 ) ) / Math.pow(10,dec); return result; } document.getElementById("toVal").value = val * metrics[document.getElementById("fromSystem").value]/ metrics[document.getElementById("toSystem").value]; } var interval = null; function watchChanges(){ interval == null ? setInterval("convert()", 500) : clearInterval(interval); } // ]]></script> </p> <table> <tbody> <tr> <td><input id="fromVal" style="width: 100px;" onfocus="watchChanges()" onblur="watchChanges()" type="text" /><select id="fromSystem" onchange="convert()"> <option value="mm">millimeters</option> <option selected="selected" value="cm">centimeters</option> <option value="m">meters</option> <option value="foot">feet</option> <option value="inch">inches</option> </select></td> </tr> <tr> <td colspan="1" align="center">=</td> </tr> <tr> <td><input id="toVal" style="width: 100px;" type="text" disabled="disabled" /><select id="toSystem" onchange="convert()"> <option value="mm">millimeters</option> <option value="cm">centimeters</option> <option value="m">meters</option> <option selected="selected" value="foot">feet</option> <option value="inch">inches</option> </select></td> |
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