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JavaScript - Help With \n In Return Statment
I want the output to be this way
Student: Doe, John eMail: jd@email.com Course ID: COIN-O70A.01 ----------------------- Can any one pls help me with the display. If I use alert instead of return then I works. But I need to display it in the document. Code: <html>
<head>
<title>Variable - Examples 1</title>
<script type="text/javascript">
function Student(firstName, lastName, email,courseID){
this.firstName = firstName;
this.lastName = lastName;
this.email = email;
this.courseID = courseID;
}
Student.prototype = {
constructor : Student,
toString : studentInfo
};
function studentInfo(){
return this.firstName + "," + this.lastName + '\n'+ this.email + '\n' + this.courseID;
}
var student = new Student("Doe", "John", "Doeohn@gmail.com","COIN 70A.01");
</script>
</head>
<body>
<script type="text/javascript">
document.writeln(student.toString());
</script>
</body>
</html>
Similar TutorialsI don't understand the logic of Break, Return False, Return True. It was never really covered in our college class, and I see everyone using it. I got an A in the class, if that 'proves' that I really tried to apply myself. NOTE: I understand what the function is doing. I just don't understand WHEN to use break, return false or return true if the the translator can determine the conditional statements. PHP Code: function submitForm(){ var ageSelected = false; for (var i=0; i<5; ++1){ if (document.forms[0].ageGroup[i].checked == true) { ageSelected = true; break; } } if (ageSelected == false){ window.alert("You must select your age group"); return false; } else return false; } if the the translator can determine the conditional statements, why not write it like this: PHP Code: function submitForm(){ var ageSelected = false; for (var i=0; i<5; ++1){ if (document.forms[0].ageGroup[i].checked == true) { ageSelected = true; break; // what's the point for the 'break'? Won't the rest of the code be ignored since it passed the first condition? } } if (ageSelected == false){ window.alert("You must select your age group"); return false; } // why not leave the last else out? is it just a 'safety' catch, in case something other than true or false is inputted? else return false; // what's the point? } Questions: Why use return true, if the translator knows it's ture? Why use "return false" if the translator knows it's false and the alert window has already gone up? why not use "break" to stop the code? Why use the "return false" at the end "else" statement? Hi room, Hey, I opened up the source code for this page in google chrome and since i'm learning javascript, i wanted see if i could "read" it and figure out what was going on. I'm am having the hardest time understanding "return false" and "return true". Could someone step me through this via interpreting this code (in bold typeface): Code: var DefaultValue = 'Search';
function clearSearch() {
if (document.searchForm.q.value == DefaultValue) {
document.searchForm.q.value = '';
}
}
function validateSearchHeader() {
if ( document.searchForm.q.value == '' || document.searchForm.q.value.toLocaleLowerCase() == DefaultValue.toLocaleLowerCase() ) {
alert('Please enter at least one keyword in the Search box.');
document.searchForm.q.focus();
return false;
}
return true;
}
Thanks! How do you format a if statment for a multidemensional array.
Code: var areas = {
"The Plains of CASCADIAN": { yMin: 0, yMax: 20, xMin: 0, xMax: 24 },
"The Forests of BELGROS": { yMin: 0, yMax: 34, xMin: 24, xMax:50 },
"Bewitched VOLRAP": { yMin: 0, yMax: 42, xMin: 50, xMax:100 },
"The Moutains of MELDROSS": { yMin: 26, yMax: 52, xMin: 0, xMax: 48 },
"The Moutains of OLAP": { yMin: 49, yMax: 68, xMin: 0, xMax: 48 },
"The Swamps of NEMBRESS": { yMin: 54, yMax: 90, xMin: 44, xMax: 100 },
"The Great Wood of OLKLEMPT": { yMin: 62, yMax: 100, xMin: 32, xMax: 100 },
"Dark Forests of MURLAP": { yMin: 60, yMax: 100, xMin: 0, xMax: 42 },
"Imperial MANTRIOCK": { yMin: 22, yMax: 58, xMin: 44, xMax:100 }
}
How would you reffer to the areas with a javascript if statment or case? This code is not working correctly when you type get_data it should only work if you already have typed load_hacker. But get_data works withought load_hacker.
Code: <script type="text/javascript">
function command(){
if(command.value = "load_hacker" && level.value == 1){
document.getElementById("command").value = "";
document.getElementById("number").value = "";
plus();
}
else
{
document.getElementById("command").value = "...";
document.getElementById("number").value = "...";
}
if(command.value = "get_data" && level.value == 2){
document.getElementById("command").value = "";
document.getElementById("number").value = "";
plus();
}
else
{
document.getElementById("number").value = "...";
document.getElementById("command").value = "...";
}
}
</script>
<script type="text/javascript">
function plus(){
document.getElementById("level").value ++;
}
</script>
><input type="text" value="" id="command" size="" style="background-color:transparent;border:0px solid white;" />
#<input type="text" value="" id="number" size="10" style="background-color:transparent;border:0px solid white;" /> <input type="button" value="Enter" onclick="command()" />
<input type="hidden" value= 1 id="level" />
was wondering if it made sense to optimize the comparison order inside an if() statement if one of the comparison targets is a function call eg: Code: var a = true,
b = function() {return false;};
if (b() || a) {...}
if (a || b()) {...}
would the second statement run faster because it would theoretically never need to call b() in this situation? can the eval order be relied on? does this depend on the js engine/internal optimizations? thanks, Leon Could you make a if statment for adding points to Fel,Dom or Blob. <script type="text/javascript"> Blob = 500 Fel = 300 Dom = 400 if (Fel == Dom && Dom == Blob) { document.write("<b>It was a tie!</b>") } else if (Blob == Dom || Dom == Blob) { document.write("<b>Dom and Blob!</b>"); } else if (Fel == Dom || Dom == Fel) { document.write("<b>Dom and Fel!</b>"); } else if (Blob == Fel || Fel == Blob) { document.write("<b>Blob and Fel!</b>"); } if (Fel > Blob || Fel > Dom ) { document.write("<b>Fel!</b>"); } else if (Dom > Fel || Dom > Blob) { document.write("<b>Dom!</b>"); } else if (Blob > Dom || Blob > Fel) { document.write("<b>Blob!</b>"); } </script> i have this in my javascript code but have no idea on how a returned value works/where does it return to???? what do i do/or can i do with a value that gets returned??? i am asking this so i can learn on how to use it cos i am new to all this and dont know how it works...please show/explain to me please? thanks here my full code: PHP Code: <?php use_stylesheets_for_form($form) ?> <?php use_javascripts_for_form($form) ?> <html> <head> <script type="text/JavaScript"> function refreshPage(s) { window.location.reload(); if((s.options[s.selectedIndex].value) = "zed-catcher") { var $index = s.selectedIndex; var $value = s.options[$index].value; alert (s.selectedIndex); alert ($value); window.location.reload(); [COLOR="Red"]return &value; //where does it return to ???? how/what to do with a return value???[/COLOR] } } </script> </head> </html> <body> <form action="<?php echo url_for('adminservice/'.($form->getObject()->isNew() ? 'create' : 'update').(!$form->getObject()->isNew() ? '?id='.$form->getObject()->getId() : '')) ?>" method="post" <?php $form->isMultipart() and print 'enctype="multipart/form-data" '?>> <?php if (!$form->getObject()->isNew()): ?> <input type="hidden" name="sf_method" value="put" /> <?php endif; ?> <table > <tfoot> <tr> <td colspan="2"> <?php echo $form->renderHiddenFields(false) ?> <a href="<?php echo url_for('adminservice/index') ?>">Back to list</a> <?php if (!$form->getObject()->isNew()): ?> <?php echo link_to('Delete', 'adminservice/delete?id='.$form->getObject()->getId(), array('method' => 'delete', 'confirm' => 'Are you sure?')) ?> <?php endif; ?> <input type="submit" value="Save" /> </td> </tr> </tfoot> <tbody> <?php echo $form->renderGlobalErrors() ?> <tr> <th><?php echo $form['name']->renderLabel() ?></th> <td> <?php echo $form['name']->renderError() ?> <?php echo $form['name']?> </td> </tr> <tr> <th><?php echo $form['logo_url']->renderLabel() ?></th> <td> <?php echo $form['logo_url']->renderError() ?> <?php echo $form['logo_url'] ?> </td> </tr> <tr> <th><?php echo $form['call_center_number']->renderLabel() ?></th> <td> <?php echo $form['call_center_number']->renderError() ?> <?php echo $form['call_center_number'] ?> </td> </tr> <tr> <th><?php echo $form['catcher_id']->renderLabel(); $catcher_id = $form->getObject()->getCatcherId(); $catcher = LpmCatcherPeer::getByCatcherId($catcher_id); $catcher_name = $catcher->getName(); ?></th> <td> <?php echo $form['catcher_id']->renderError() ?> [COLOR="Red"]<select name="services" onchange="refreshPage(this.form.services)">[/COLOR] <?php $catcher_names = LpmCatcherPeer::getByAllNames(); foreach($catcher_names as $row) { ?> <option value="<?php echo $row->getName()."/".$row->getId();?>" <?php if($row->getName() == $catcher_name) echo ' selected="selected"'; ?> ><?php echo $row->getName();?></option> <?php } [COLOR="Red"]if ($row->getName() == "zed-catcher") //just thought with the return in my java script i can pass the newley selected value back to here and if it meets the if i echo these lines?? { echo $form['service_code']->renderLabel(); echo $form['service_code']->renderError(); echo $form['service_code']; } [/COLOR] ?> </select> </td> </tr> <tr> <th><?php echo $form['price_description']->renderLabel() ?></th> <td> <?php echo $form['price_description']->renderError() ?> <?php echo $form['price_description'] ?> </td> </tr> </tbody> </table> </form> </body> thanks! i'm trying to get some information with this code from my database: Code: function getTableSize(tableName){
db.transaction
(
function(tx)
{
tx.executeSql
('SELECT * FROM '+ tableName,[] , function(tx, r)
{
return r.rows.length;
}
);
}
);
}
but it doesnt work and i cant figure why what i want is that this function return the table size to one variable in another function...something like: Code: var groupTableSize = getTableSize('groups');
Have a jsp page with 10 editable fields and in last Add Button.Now when user edit a field from value 10 to 20(example)and click on Add .Value will be changed and focus will return to the same field.similarly for other fields.how to to .any code sample?
Im working on a function where i need to return the active elements ID. the element will have class="main" id="1" onmouseover="showSub()"> Would someone be able to write me a simple function which simply puts the elements ID number in an alert box? I can figure out the rest i need from that . Thanks, Tom Hello, How can this be made to return confirmation? <form id="score_form" method="post" action="addscore.php"><input id="score" name="score" value="" type="hidden"><img id="collect" style="cursorointer;height: 37px; width: 100px; margin-top: 13px;" src="./collectlive.gif" onclick="collect_points();"></form> Letsay the confirmation window would say"ARE YOU SURE" i achieved to make a chain: Code: function getId(id) {
id_elem = document.getElementById(id);
return {
color:function(e){
id_elem.style.color = e;
}
};
}
so this can be getId("test").color("red"); but what happens if i want to do that? Code: function getId(id) {
id_elem = document.getElementById(id);
return id_elem;
return { ????......
how can i chain if i use return in the first place? hi,i don't understand about the jquery basic example the code is below PHP Code: <html> <head> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("button").click(function(){ $('p').addClass(function(n){ return 'par_' + n; }); }); }); </script> <style type="text/css"> .par_0 { color:blue; } .par_1 { color:red; } </style> </head> <body> <h1>This is a heading</h1> <p>This is a paragraph.</p> <p>This is another paragraph.</p> <button>Add classes to p elements</button> </body> </html> i want to understand about the how is work function(n){ in the function a and how work return function return 'par_' + n; thanks mate I have a javascript that takes information from a form and recompiles that information into a readable shift report. The problem I am having is with returns in the textareas. I tried: Code: theReport = theReport.replace("
","<br>"
but that space puts the rest of the var on a different line and screws with the results. How can I replace a return with <br>? hi, i wanna get the value from javascript to php variable. here is my code, <html> <body> <select name="drop" size="10" onchange="drp_selectd_value(this)"> <option>One</option> <option>Two</option> <option>Three</option> <option>Four</option> <option>Five</option> </select> <?php echo "The PHP value".'<script>value_return();</script>'; $p='<script>y;</script>'; ?> </body> </html? <script> var x; var y=100; function drp_selectd_value(sdf) { x=sdf.value; alert("Value is : " +x); value_return(x); } function value_return(val) { alert("Second Function calling : "+val ); return val; } </script> This code does not working!!! How can i fix tis problem???I m expecting for the reply.. Thanks in advance i have this line of code: Code: <a href="#" id="profilelink" name="link2" onClick="viewornot(<?php echo $freechat_id ?>)"><?php echo $freechat_list; ?></a>
//call the JS onclick and if OK was click do the message box and send button here
then i have my JS: Code: function viewornot(id)
{
var e = confirm('Do you want to view this profile?');
if (e == true)
{
window.location.href = "http://www-rainbowcode-net/apps_dev.php/profiles/showprofilepersonal?id="+id;
window.location('http://www-rainbowcode-net/apps_dev.php/profiles/showprofilepersonal?id='+id);
return true;
}
else
{
var e2 = confirm('Do you want to send a message?');
if (e2 == true)
{
//if ok was clicked send value back??
return e2;
}
}
}
on the e2 confirm: if i clicked OK how can i send a value back(so that i know OK was clicked) so that i can then produce the message box and send button and do the rest of the code to send a message??? thank you Hey everyone, I need some help with a function. I'm using ajax to grab a response from a PHP page, on success, the ajax sets a variable. After the line that calls the ajax function is the line the returns the variable (a global variable). Problem is, because the variable is returned right after the ajax function is fired, it doesn't give the ajax enough time to set the variable. The work around I've thought about would be using the ajax function as a variable, and returning that variable in the initial return line. Could anyone either help me with a better solution, or tell me what I'm doing wrong? Here's some code for reference: The function that will return the response I'm trying to collect: Code: function lt_ajaxGet(hash) {
var params = "hash=" + escape(encodeURI(hash));
makePOSTRequest('hash.php?get', params);
return ajax_response;
}
The ajax code: Code: if(http_request.status == 200){
ajax_response = http_request.responseText;
}
Hi all, I have a page built with asp.net that includes some "imagebutton"s within a form. These render as input tags with the type set to image. I ahve the onclick attribute set to run a custom javascript function and return false, so in the fully rendered page I get something like the following: Code: <input type="image" name="ctl00${cut}" tabindex="-1" title="Click to look up the details" src="images/load_details.png" onclick="LoadDetails(); return false;" style="border-width:0px;" />
This has worked fine for the few months the code has been in place and then just recently (within the last few days) it has stopped working for a single network user. They click on the link and instead of the function executing (and the AJAX loading details into the page) the form submits. This makes me think that the "return false" simply isn't executing. The user says that they haven't changed any settings or anything that may cause this issue... The browser being used throughout the company is IE8 under Windows XP. I have checked the version being used on their comptuer and it is 8.0.6001.18702, which is the same version as the one installed on my local machine... which is working fine. Another user has logged into the computer being used by the user with the issues and it works fine for the second user. Also, the user having the issues has logged into a different computer on the network and was still having the same problems. I think I've included all the details, but I'll happily provide any required information. Anyone have any ideas? I'm troubleshooting some issues with menus closing and when I alert the return value from something like: Code: timer = setTimeout("closeMenu(id)",500);
I get 2,3,4. It seems to increment. Does that just represent how many times the timeout code has been executed? |
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