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JavaScript - Multiple Try Function
Similar TutorialsHi all, I'm new to javascript and am having a few issues. I have a function that I want to run with multiple onchange events. My page has several image selection buttons and I want it to preview the image when/if each one is selected. I have gotten it working for the first on the page but cannot for the remainder. Is this possible or am I wishful thinking? Foster Reply With Quote 01-17-2015, 10:23 AM #2 Arbitrator View Profile View Forum Posts Senior Coder Join Date Mar 2006 Location Splendora, Texas, United States of America Posts 3,423 Thanks 32 Thanked 293 Times in 287 Posts Originally Posted by Foster I'm new to javascript and am having a few issues. I have a function that I want to run with multiple onchange events. My page has several image selection buttons and I want it to preview the image when/if each one is selected. I have gotten it working for the first on the page but cannot for the remainder. Is this possible or am I wishful thinking? Where's the code? If you simply want to assign multiple listeners for the same event on a single element, use element.addEventListener("change", eventHandler) instead of element.onchange = eventHandler or <element onchange="eventHandler();"></element>. hello, I posted a threat a couple of days ago, but i got no answer. I guess it was just too messy. So i'm trying over again. You might therefore have a little deja vu, but still, any help will be greatly appreciated. I need this function to work on all my div, separately, on loading. here is the function: Code: <script>
// Random Position Script
var xxx = Math.floor(Math.random()* (pageWidth()-230));
var yyy = Math.floor(Math.random()* (pageHeight()-50));
function start()
{var x = (posLeft()+xxx) + 'px';
var y = (posTop()+yyy) + 'px';
moveObjTo('myobj',x,y);
setObjVis('myobj','visible');}
window.onload = start;
window.onscroll = start;// JavaScript Document
</script>
At the moment, the function is working on one object ('myObj'). I laced all my documents into separate divs and i need them all (and seperatly) to load on a random position at start. So i need to write in something that makes this function keep on going for all my objects. It might seem like a very dumb question, but 'm just starting with javascript, so not much of a coder yet. Hope you can help o this one. nice day to everybody! Hi everybody. I'm new to both Javascript and this site, so apologies if this isn't the right way to be asking this question. Here's what I'm trying to do. I've got two dropdown boxes ('language' and 'word'). When the submit button is pressed, I want a div to show with the right word in it. I can do this fine with one dropdown box, but two has got me stumped. Any ideas would be much appreciated. S I'm probably missing something simple here. I have this function called display: function display(name3,office3,officePH3,mobile3,email3) { document.getElementById('viewer').src=('Location_Files/')+(office3)+('.htm') } It's supposed to take 5 values and do various things with them. When I only had one parameter it worked fine, it took an office number which was the value of a listbox option and turned it into a path and then pointed an iframe to that path. Then I changed it so the value of the listbox option was 5 parameters separated by commas. Here's the listbox now: <select onchange="display(this.value)" multiple="multiple" id="People" name="People" style="border-style: none; height:260px; width:220px;"> <option value="test name,1656,phone,NONE,email">Loading</option> </select> You can see display is executed as "display(this.value)" so in theory it should take "test name,1656,phone,NONE,email" as its parameters and it should accept 1656 as the "office3" parameter. For some reason it's not working out that way, the function executes and the iframe changes but I get an unable to display webpage message like the path is broken. Can anyone see what I'm doing wrong? Hi, I have a problem with my script, I have a php request and the result is shown in a div, so there is several divs and their id is the "id" in the database, and I want that if we click on a link, it hides every divs... Here is how I tried to do that: Code: <script type="text/javascript">
function visibilite(thingId)
{
var targetElement;
targetElement = document.getElementById(thingId) ;
targetElement.innerHTML = "" ;
}
</script>
Code: $hide = "";
while($ligne=mysql_fetch_array($ress)){
$hide.= "visibilite('$ligne[id]'); ";
$return.= "<tr><td>$ligne[heure] - $ligne[fin]</td><td>$ligne[sport]</td><td>$ligne[salle]</td><td>$ligne[ville]</td><td>$dispo/$ligne[place]</td><td><div id=$ligne[id]>";
$return.= "<a href=# onClick=\"maFonctionAjax($ligne[id],$tennis); $hide return false\">Reserver</a>";
$return.= "</div></td></tr>";
}
Every div'id is the id in the database, with the onClick we call an ajax function and $hide which is the call for the function visibilite for each div It works for some request, I don't know how is it possible because I can have the same number of results and sometimes it works, and sometimes not... Does somebody can help me? Thanks a lot! Jeff Another homework assignment that I can't quite seem to get to work... I've been asked to do the following using javascript: -Create a function named randInt() with one parameter of "size". Declare a variable named "rNum" equal to a random integer between 1 and the value of the size variable. Return the value of the "rNum" varialbe from the function. -Create a function named getQuote() with one parameter anemd "qNum". The function should create an array named mtQuotes with five quotes; there should be no quote for the array index "0". Return the value of the mtQuotes array for the qNum index. - In the div element of "quotes" insert a script with the following commands: Declare a variable named "randValue" which is euqal to a random integer between 1 and 5 (use the randInt() function). Declare a variable named "quoteText" containing the quote whose array index value is equal to randValue. Write the value of quoteText to the web page. Here is what I have...it returns undefined. thanks. Code:
<html>
<head>
<script type="text/javascript">
function randInt(size) {
var rNum=Math.ceil(Math.random()*5);
return(rNum);
}
</script>
<script type="text/javascript">
function getQuote(qNum);
var mtQuotes = new Array();
mtQuotes[0] = "";
mtQuotes[1] = "I smoke in moderation, only one cigar at a time.";
mtQuotes[2] = "Be careful of reading health books, you might die of a misprint.";
mtQuotes[3] = "Man is the only animal that blushes or needs to.";
mtQuotes[4] = "Clothes make the man. Naked people have little or no influence on society.";
mtQuotes[5] = "One of the most striking differences between a cat and a lie is that a cat has only nine lives.";
return mtQuotes[qNum];
</script>
</head>
<body>
<div id="quotes">
<script type="text/javascript">
var randValue=randInt(5);
var quoteText=getQuote(randValue);
document.write(quoteText);
</script>
</div>
Hi, I have a search function which works when I only want to have only one search per page, but as it involves a string call I'm not sure how to modify it to multiple search requests on a page. The below works fine for one call: Code: <script type="text/javascript">
function showHint(str){
if (str.length==0){
document.getElementById("txtHint").innerHTML="";
return;
}
if (window.XMLHttpRequest){
xmlhttp=new XMLHttpRequest();
}
else{
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function(){
if (xmlhttp.readyState==4 && xmlhttp.status==200){
document.getElementById("txtHint").innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET","getName.php?q="+str,true);
xmlhttp.send();
}
</script>
</head>
<body>
<label>Search by name: </label>
<input type="text" id="txt1" class="input" onkeyup="showHint(this.value)" />
<br />
<p>Suggestions: <span id="txtHint"></span></p>
<br />
But if I want to do mulitple I have tried changing it to: Code: <script type="text/javascript">
function showHint(File,ID){
if (str.length==0){
document.getElementById(ID).innerHTML="";
return;
}
if (window.XMLHttpRequest){
xmlhttp=new XMLHttpRequest();
}
else{
xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");
}
xmlhttp.onreadystatechange=function(){
if (xmlhttp.readyState==4 && xmlhttp.status==200){
document.getElementById(ID).innerHTML=xmlhttp.responseText;
}
}
xmlhttp.open("GET",File,true);
xmlhttp.send();
}
</script>
</head>
<body>
<label>Search by firstname: </label>
<input type="text" id="txt1" class="input" onkeyup="showHint('GetFirstName.php?q='+str,'txtHint')" />
<br />
<p>Suggestions: <span id="txtHint"></span></p>
<br /> <label>Search by surname: </label>
<input type="text" id="txt1" class="input" onkeyup="showHint('getLastName.php?q='+str,'txtHintSn')" />
<br />
<p>Suggestions: <span id="txtHintSn"></span></p>
<br />
The above doesn't work and I am not sure what do about the showHint(str) as clearly I am not representing it properly in my attempt to modify the script. Hi to All, I have a table that contains many rows, some in italian with code <td nome='riga_i'> and some in english with code <td name='row_e'>. I have created two buttons with different background flags: italy and uk, so when one pushes the button with flag uk, the html page will be reloaded with only english rows, and when one pushes the button with flag it, the same page is reloaded containing only italian rows. All the code posted here works well, but I think that the code can be better because to reach this result I had to dupplicate the same function and I don' t like this. Here the code: <html> <head> <script type="text/javascript"> function toggle(name) { tr=document.getElementsByTagName('tr') for (i=0;i<tr.length;i++){ if (tr[i].getAttribute(name)){ if (tr[i].style.display=='none'){tr[i].style.display = '';} else {tr[i].style.display = 'none';} } } } // function toggle(nome) { tr=document.getElementsByTagName('tr') for (i=0;i<tr.length;i++){ if (tr[i].getAttribute(nome)){ if (tr[i].style.display=='none'){tr[i].style.display = '';} else {tr[i].style.display = 'none';} } } } </script> </head> <body onload="toggle('name');"> <table> <tr nome="riga_i"> <td>REQUISITI RELATVI AL SERVIZIO</td> <td> </td> <td><input type="button" onclick="toggle('nome');toggle('name');" style="background-image: url(../images/flag_uk.jpg); background-color:Transparent;" /></td></tr> <tr name="row_e"> <td> </td> <td>REQUIREMENTS RELATED TO THE SERVICE</td> <td><input type="button" onclick="toggle('name');toggle('nome');" style="background-image: url(../images/flag_italy.jpg); background-color:Transparent;" /></td></tr> .... .... and so on.... ..... </table></html> To better the code I have tried in this way but without success ... <html> <head> <script type="text/javascript"> function toggle(this) { if (this=='nome' || this=='name'){ tr=document.getElementsByTagName('tr') for (i=0;i<tr.length;i++){ if (tr[i].getAttribute(this)){ if (tr[i].style.display=='none'){tr[i].style.display = '';} else {tr[i].style.display = 'none';} } } } } </script> </head> Thanks in advance !!! My problem is that i have multiple math calculations within different functions that have multiple switch statements that get calculated with an onclick="functionOne()" for each radio button and before i can calculate the outcome for some reason i must fully insert a value for every input as well as check every raidio button before i get to the end of my list. I wish to simply allow the user to fill out as many fields as he wishes leaving some bank without being restricted to do every single one.. Thank you in advance
First off I didn't know whether to post this here or in the PHP section since it deals with both, but mostly JS. I have a PHP scraper that scrapes the job title, company name and location from a website and stores them in separate arrays. These values are then extracted out one at a time from the array and stored into a string, that is then passed to a Google Maps API. I can make this successfully happen once, the thing is I need to do it multiple times. I have an idea on what I should do but don't really know how to implement it (correctly). The idea I had was to create a function in the JavaScript section that accepts three values from PHP. This function would be called in my PHP for loop that extracts the values from the array into a string. The thing that confuses me is that the Map function is called via <body onLoad="initialize()">. Here's the link to my code The statement does what I want it to do, except if there is multiple instances of the word, it only outputs one, how can I work it so all instances are output in red? (while still using .slice) var phrase = prompt("Enter a messate: ", 'Message'); var searchFor = prompt("Enter search text: ", 's'); var matchPhrase = ""; var searchIndex = -1; /* if there's a match, create a text string by * add the phrase text from before the match, * add <font> tags around the match text, * add the rest of the phrase from after the match */ searchIndex = phrase.indexOf(searchFor); if (searchIndex >=0 ) { // Copy text from phrase up till the match. matchPhrase += phrase.slice(0, searchIndex); matchPhrase += '<font color="red">' + searchFor + '</font>'; matchPhrase += phrase.slice(searchIndex + searchFor.length); phrase++ } else { matchPhrase = "No matches" } document.writeln(matchPhrase); Reply With Quote 01-31-2015, 09:08 AM #2 Philip M View Profile View Forum Posts Supreme Master coder! Join Date Jun 2002 Location London, England Posts 18,371 Thanks 204 Thanked 2,573 Times in 2,551 Posts Use a regular expression. Hi, I hope someone can help me. I'll be honest and say I don't know much about javascript, but am fairly comfortable in html. I am building a website that will have multiple image swaps on multiple pages. I am building this in wordpress, and I'm guessing that means my approach will be different than if I wasn't using wordpress. Here's how one page would work: There are 10 images shown. 1,2,3,4,5,6,7,8,9,10. When number 1 is clicked on, I want a new image - 1a. When 2 is clicked on, 2a. So there are 20 different images in all on a given page. Also, I want the user to be able to click on the image again to restore the original image. I would prefer onclick to onmouseover. There will be literally dozens of pages like this on the site, managed by wordpress, so hundreds of images to swap. Basically the first image is a question - the second image is the answer. Is this possible? 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 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> Hi! I'm trying to toggle a class and one works and the other does not and I don't know why. I'm just getting my feet wet with jquery and javascript and I figured this was a pretty easy task to take on! Maybe. Link to the page: Franklin Township Soccer Club - Change Field Status My sad, sorry attempt =| Code: $( "li.open" ).click(function() {
$( this ).toggleClass( "closed" );
});
$( "li.closed" ).click(function() {
$( this ).toggleClass( "open" );
});
The first function works with open, so I figured I'd just use opposite on closed! Ha! I don't think so! In the end within those function there is an element in a form on that page it's hidden. I'd like to change the value from a 0 to 1 for vice versa. That' will be my next step. If you could give me a little nudge in the right direction I'd appreciate it! But first understanding why one works and the other does not, that is the primary mission! I do appreciate any help given! Dave 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 <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> 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 Code: <html>
<head>
<title>TESTING</title>
<script type="text/javascript">
<!--
document.write("<input type='submit' value='submit' onclick='func()'>");
function func()
{
document.write("<input type='submit' value='New Button' onclick='func()'>");
window.alert("THIS");
}
-->
</script>
</head>
<body>
<!--input type="button" value="Read" onclick="ReadFiles()"-->
</body>
</html>
This is a very basic version of what I am trying to do. I have a dynamic list which is set in a table. When clicked, a function is run to set up a new list.. The reason I explain that, is that I need to keep it dynamic. Now for the problem: When I run this page, I have the button made right away, then when clicked it creates the new button. The new button should also run the function to create the new button again, but when I click it, I only receive "error on page". I don't know if there is a better way to go about this, but as for this route, I am stuck. Any help is greatly appreciated! -Shane |
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