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JavaScript - Deleting White Spaces
How can I to delete white spaces around parameter that I to pass with HTML forms.
For example, if I have 'firstname lastname ' or ' firstname lastname', exist it a builtin function in javascript to obtian 'firstname lastname'? savio Similar TutorialsI have a string variable: var mystring = ' hello world '; How can I truncate white spaces placed before or after my string value? Thank you in advance to help. hi all i m using the following validation code to validate email id Code: if (!/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,4})+$/.test(document.getElementById("customer_name").value))
{
msg=msg+"Must Enter a valid Login-id/Email\n";
document.getElementById("customer_name").focus();
}
now i need that if the email id contains white blank space in front of email id or end of email id then this validation should pass otherwise not. at present if there is blank space in front and end of email id then the validation doesnt passes and gives alert. what should i add in it to validate it or how can it automatically remove white spaces before validating. vineet i create cookies that contain multiple values using Jquery cookie plugin e.g, $.cookie('biz', ['foo', 'bar', 'lact'], {path: '/', expi 7}); from this url http://localhost/categories/educatio...r/universities and use a.remove('foo'); to remove the value after splitting, before removing value i count the number of value and if one remains to delete the cookie 'biz' entirely, even though i could remove the values, one always remains which cannot be remove from this url but only from http://localhost/categories i use .htaccess to rewrite the url, function of remove is : Array.prototype.remove=function(s){ var i = this.indexOf(s); if(i != -1) this.splice(i, 1); } please help I made a new thread for a problem that I solved a little after posting so I have removed the question in order to not waste anyone's time
I have created a calculator for my site but I am having troubles figuring out a way to make the "add row" and "delete row" functionality work correctly. I would like the user to only see 1 row of information and then add/delete rows as needed. I currently only have 4 static rows. If anyone can help it would be greatly appreciated. Thanks The page is at https://learningportal.juniper.net/j...lator/Calc.htm I writed the following HTML code: Quote: <html> <head> <title>Pagina di Prova</title> <script type="text/javascript" src="/home/savio/Scrivania/prova.js"></script> </head> <body> <h1 align="center">PROVA DI RIMOZIONE DI RIGHE E CELLE DALLA TABELLA</h1> <br/><br/> <table id="nometabella" border="2" align="center" cellpadding="10%"> <tr id="nomeriga1"><td>Cella 1</td><td>Cella 2</td></tr> <tr id="nomeriga2"><td>Cella 3</td><td>Cella 4</td></tr> <tr id="nomeriga3"><td>Cella 5</td><td>Cella 6</td></tr> </table> <input type="submit" value="Enter" onclick="return del()"/> </body> </html> and the following javascript code: Quote: function del() { if (document.getElementById) { var tabella = document.getElementById("nometabella"); var riga1 = document.getElementById("nomeriga1"); tabella.removeChild(riga1); } } I want to delete first row of table, but it happens nothing. How can solve this problem? My table starts like this: Code: <table> <tr> <td rowspan='2'></td><td>Data</td><td>Data</td><td>Data</td> </tr> <tr> <td>Data</td><td>Data</td><td>Data</td> </tr> </table> When an addRows button is clicked, the first two rows are copied (cloned), a checbox is then inserted into the row1 cell1, then the two rows are appended: <table> <tr> <td rowspan='2'></td><td>Data</td><td>Data</td><td>Data</td> </tr> <tr> <td>Data</td><td>Data</td><td>Data</td> </tr> <tr> <td rowspan='2'><input type='checkbox' name='check[]'></td><td>Data</td><td>Data</td><td>Data</td> </tr> <tr> <td>Data</td><td>Data</td><td>Data</td> </tr> </table> Rows,except the first two can then be deleted by selecting the appropriate checkbox and clicking a deleteRow button. The check[] only exists after the first two rows have been copied and appended, so undefined means only two rows exist. Having a problem with the while loop. If a browser sees the next sibling of a tr as a td, the the loop should force the browser to go to the next sibling until its a tr, i.e row4. But its causing my browser(FF) to become unresponsive. Code: function deleteRow()
{
if(check == 'undefined')
{
return;
}
else
{
var check = document.getElementsByName('check[]'),row,nextRow,x;
var len = check.length;
for(x=len-1; x>=0; x--)
{
if(check[x].checked)
{
row = check[x].parentNode.parentNode;
while(row.nextSibling.nodeName != 'tr')
{
nextRow = row.nextSibling;
}
nextRow = row.nextSibling;
alert('ok');
}
}
}
}
Appreciate ans help with this? My table had the following layout. Code: <table> <tr> <td rowspan='2'><td> <td>Data</td><td>Data</td><td>Data</td> </tr> <tr> <td>Data</td><td>Data</td><td>Data</td> </tr> </table> After clicking an add rows button, the two rows are cloned and appended as follows with a checkbox added as shown. Code: <table> <td rowspan='2'><td> <td>Data</td><td>Data</td><td>Data</td> </tr> <tr> <td>Data</td><td>Data</td><td>Data</td> </tr> <tr> <td rowspan='2'><input type='checkbox' name='check'><td> <td>Data</td><td>Data</td><td>Data</td> </tr> <tr> <td>Data</td><td>Data</td><td>Data</td> </tr> </table> I want to be able to delete rows 3&4 by selecting the checkbox in row 3 and clicking a delete rows button. Regardless of how many sets of rows have been previously added, any set of rows can be deleted by selecting the appropriate checkbox(es) and clicking delete button. I'm trying to figure out how this can be done. My thinking is if checkbox is checked, calculate row index. I would then have to call deleteRow twice on that row index. Is there a better way of doing this? Say I have a <textarea> input and I want to strip all the blank lines (lines with only whitespace). I have this regular expression, why doesn't it do anything? I've tried different variations with the flags (m and g). Code: ... var output = input.replace(/^\s*$/gm, "notworking!"); ... The very same regex works fine in my text editor (Notepad2), and I can match all empty lines. Code: LINE1
LINE4 ^(line 3 has some spaces)
should become Code: LINE1 LINE4 And when I finally do get this to work, how would I remove the empty line? Our site allows the user to specify his or her location, which is then stored in a cookie. As the user navigates from page to page on the site, this location is remembered. The user also has the option of changing their location. This calls a javascript function which sets the value of that location cookie to "". When another function sees that the value is "" of that cookie, it brings back the location selector. Then the user can start over and choose a location. Here's the problem: Let's say I'm on page 1 of the site and I choose location A. Then I navigate to page 2. On page 2, I say I want to change my location. Now the page shows me the location selector instead of saying that I am in location A. So far, so good. However, if I now navigate back to page 1, it thinks I am still in location A. the cookie was deleted for page 2, but still remembered for page 1. It isn't a cache issue; if I reload the page, page 1 will still say that I am located in location A, even though on page 2, I elected to delete that cookie (or to set its value to ""). What is a better way to delete cookie so that if I were to navigate back to a page on which I'd previously set the cookie, it will now know that the value is the new value (""), and not the value I'd originally set the first time I visited the page? THANK YOU! EDIT: Post deleted
So <br/> creates a brake but is there a way to make "tab" space?
I wrote a script that should delete all table rows at once. For loop deletes all rows except row 1 and row 3. Further clicking on the delete button, deletes row 1 and then 3. While loop ,on the first click on the delete button, also leaves rows 1 and 3 not deleted. Further clicking on the delete button, does not delete these rows. I was sure that both version of the script should delete all rows in the table at once. Could someone look at the script and tell me what is wrong? Thank you very much Code: <html>
<head>
<title>Deleting All Table Entries</title>
</head>
<script type="text/javascript">
/* WHILE LOOP
var i=0;
function deleteAll() {
document.getElementById("deleteButton").onclick=function() {
var table=document.getElementById("myTable");
while(i<table.rows.length) {
table.deleteRow(i);
i++;
}
}
}
*/
/*FOR LOOP*/
function deleteAll() {
document.getElementById("deleteButton").onclick=function() {
var table=document.getElementById("myTable");
for(var i=0; i<table.rows.length; i++) {
table.deleteRow(i);
}
}
}
window.onload=deleteAll;
</script>
<body>
<table id="myTable">
<tr>
<td>Row 0</td>
</tr>
<tr>
<td>Row 1</td>
</tr>
<tr>
<td>Row 2</td>
</tr>
<tr>
<td>Row 3</td>
</tr>
<tr>
<td>Row 4</td>
</tr>
</table>
<button id="deleteButton"> Delete All Rows in the Table </button>
</body>
</html>
Hey Guys, I am a student doing my Cert IV in IT and am having a bit of trouble with some code. I have a form that when a letter is entered it returns a message saying you need to enter numbers in, and am trying to find a way of it checking if there are spaces in the numbers entered at the same time as checking if a number has been entered. My code looks as follows: Code:
<html>
<head>
<title>Activity 2.25</title>
</head>
<script type="text/javascript">
function validateform()
{
var element;
var BikeMoney;
var TVMoney;
var iPodMoney;
var CarPrice;
var flag;
flag="OK"
element=document.getElementsByTagName('input');
for(counter=0; counter<element.length; counter++)
{
switch (element[counter].type)
{
case "submit":
break;
default:
if(isNaN(element[counter].value))
{
alert("You will need to enter a number into " + element[counter].name);
flag="NotOK"
}
else
{
BikeMoney=element[0].value;
TVMoney=element[1].value;
iPodMoney=element[2].value;
CarPrice=element[3].value;
}
}
}
if(flag=="OK")
if ((Number(BikeMoney)) && (Number(TVMoney)) && (Number(iPodMoney)) && (Number(CarPrice)))
{
TotalMoney = parseFloat (BikeMoney) + parseFloat (TVMoney) + parseFloat (iPodMoney)
if(TotalMoney >= CarPrice)
{
alert("The total money is " + TotalMoney + " and the car price is " + CarPrice + " and you can afford the car");
}
else
{
alert("The total money is " + TotalMoney + " and the car price is " + CarPrice + " and you cannot afford the car");
}
}
else
{
alert("Enter numbers Please");
}
}
</script>
<body>
<form name="input form" method="post" action="">
<table>
<tr><td>Enter money from bike sale</td><td><input type="text" name="Bike Money"></td></tr>
<tr><td>Enter money from TV sale</td><td><input type="text" name="TV Money"></td></tr>
<tr><td>Enter money from iPod sale</td><td><input type="text" name="iPod Money"></td></tr>
<tr><td>Enter the price of the car</td><td><input type="text" name="Car Price"></td></tr>
<tr><td></td><td><input type="submit" value="Submit Details" onclick=validateform()></td></tr>
</table>
</form>
</body>
</html>
Hello, I just created a new page topper for my website, and am new to javascript. I spent HOURS on designing all of the mouseover images that are on my website now, except there are spaces in between all of the images and I designed them to touch. You can see what I am talking about on my website he http://www.corporateavedesign.com I've tried everything in the code to get these images to touch. Can anyone help? Here is my code: Code: <SCRIPT LANGUAGE="JavaScript">
<!-- Begin
loadImage1 = new Image();
loadImage1.src = "http://www.corporateavedesign.com/images/website-logoMO1.jpg";
staticImage1 = new Image();
staticImage1.src = "http://www.corporateavedesign.com/images/website-logo1.jpg";
loadImage2 = new Image();
loadImage2.src = "http://www.corporateavedesign.com/images/website-logoMO2.jpg";
staticImage2 = new Image();
staticImage2.src = "http://www.corporateavedesign.com/images/website-logo2.jpg";
loadImage3 = new Image();
loadImage3.src = "http://www.corporateavedesign.com/images/website-logoMO3.jpg";
staticImage3 = new Image();
staticImage3.src = "http://www.corporateavedesign.com/images/website-logo3.jpg";
loadImage4 = new Image();
loadImage4.src = "http://www.corporateavedesign.com/images/website-logoMO4.jpg";
staticImage4 = new Image();
staticImage4.src = "http://www.corporateavedesign.com/images/website-logo4.jpg";
loadImage5 = new Image();
loadImage5.src = "http://www.corporateavedesign.com/images/website-logoMO5.jpg";
staticImage5 = new Image();
staticImage5.src = "http://www.corporateavedesign.com/images/website-logo5.jpg";
loadImage6 = new Image();
loadImage6.src = "http://www.corporateavedesign.com/images/website-logoMO6.jpg";
staticImage6 = new Image();
staticImage6.src = "http://www.corporateavedesign.com/images/website-logo6.jpg";
// End -->
</script>
<!-- STEP TWO: Insert this code into the BODY of your HTML document -->
<TD
style="BORDER-TOP: #000000 0px solid; BORDER-LEFT-WIDTH: 0px; BORDER-LEFT-COLOR: #000000; BORDER-BOTTOM: #000000 0px solid; BORDER-RIGHT-WIDTH: 0px; BORDER-RIGHT-COLOR: #000000"
vAlign=bottom bgColor=#ffffff colSpan=2 height=10>
<CENTER>
<a href="http://www.corporateavedesign.com/" onmouseover="image1.src=loadImage1.src;" onmouseout="image1.src=staticImage1.src;">
<img name="image1" src="http://www.corporateavedesign.com/images/website-logo1.jpg" border=0></a>
<a href="http://www.corporateavedesign.com/" onmouseover="image2.src=loadImage2.src;" onmouseout="image2.src=staticImage2.src;">
<img name="image2" src="http://www.corporateavedesign.com/images/website-logo2.jpg" border=0></a>
<a href="http://www.corporateavedesign.com/pages/AboutUs.htm" onmouseover="image3.src=loadImage3.src;" onmouseout="image3.src=staticImage3.src;">
<img name="image3" src="http://www.corporateavedesign.com/images/website-logo3.jpg" border=0></a>
<a href="http://www.corporateavedesign.com/contact.htm" onmouseover="image4.src=loadImage4.src;" onmouseout="image4.src=staticImage4.src;">
<img name="image4" src="http://www.corporateavedesign.com/images/website-logo4.jpg" border=0></a>
<a href="http://www.corporateavedesign.com/pages/Portfolio.htm" onmouseover="image5.src=loadImage5.src;" onmouseout="image5.src=staticImage5.src;">
<img name="image5" src="http://www.corporateavedesign.com/images/website-logo5.jpg" border=0></a>
<a href="http://www.corporateavedesign.com/category_36/Current-Price-List.htm" onmouseover="image6.src=loadImage6.src;" onmouseout="image6.src=staticImage6.src;">
<img name="image6" src="http://www.corporateavedesign.com/images/website-logo6.jpg" border=0></a>
</CENTER>
Please help if you can, I am desperate and my website looks crazy right now! THANKS!!! Hi All, I have a form in my homepage which takes some values. In that, a text box takes multiple values seperated by spaces. I have allowed only alphanumeric characters in that with the following code. Code:
function rmsplcharchkdepo()
{
var iChars = "\\\/~!@#$%^&*()=+[]{}|;:?,.\"`'<>";
var un= document.getElementById("deposit").value;
for (var i = 0; i < document.ipmform.deposit.value.length; i++) {
if (iChars.indexOf(document.ipmform.deposit.value.charAt(i)) != -1) {
alert ("Error!! Remove Special Characters.");
document.getElementById("deposit").value = un.substring(0,0);
return false;
}
}
}
How can i trim the multiple spaces entered by the user between values instead of one single space allowed.. For eg: TEXTBOX:INDIA USA UK User should not be able to enter a space at the beginning, multiple spaces between the values and at the end. This is just to avoid unwanted complications at the backend. In brief i need a script which trim multiple and consecutive spaces to one. It would be a great help if some one can help me in this. Hi guys (and gals) Working on my uni essay, and really struggling here with a resolution to this part of code. Maybe I shouldnt be looking for the answer, but more so on where I am going wrong. What I am meant to do is replace the spaces in sString with the actual word 'space' i.e hello 'everyone' = 'hellospaceeveryone' Any help would be appreciated! Code: function substituteSpaces(aString)
{
sRet = '';
for (var iA = 0; iA < aString.length; iA++)
{
if (iA = 0)
sRet = sRet + ' ';
//sRet = sRet + 'space';
//var nextLetter = aString.charAt(iA);
// sRet = sRet + nextLetter;
}
}
sSpace = substituteSpaces('a string with spaces');
alert ("Hello");
Hi everyone, I run a math site and I just recently built a little program to generate math problems. When the user submits the correct answer the program changes the problem and all the steps/hints. Everything works fine except that during the change over there are all these weird blocks (same color as my background) (*FireFox Only). It only lasts for a couple of seconds, but it would be nicer if it smoothly replaced the problem. Here is the test site: http://www.rootmath.org/test/solving-limits The program/practice problem is at the bottom, if you don't know how to solve it you can hit "hint" until it gives you the answer. When you enter the correct answer and then click for a new problem you'll see the funky blocks. Any help/suggestions would be greatly appreciated! Here is the code: writeProblem() is called when the user gets the right answer and asks for another problem: Code: var writeProblem = function(){
//these are neccessary after the first call to writeProblem.
$(".steps").hide();
$("#submit_answer").show();
$("#next_problem").hide();
showStep.reset();
//CLEAR "steps_area"
var problem_area = document.getElementById('steps_area');
while(problem_area.firstChild){
problem_area.removeChild(problem_area.firstChild);
}
//Create a limit problem
var limit = limits();
limit.setDenominator(rand(6,0));
var denom = limit.getDenominator();
var randInt = 0//rand(3,0);
var lim = limit.getType(randInt, denom);
var step = lim.step(denom);
answer = lim.getAnswer(); //made global so checkAnswer() can access it
var x = document.getElementById('problem');
x.innerHTML = addLatex(lim.problem);
var problem_area = document.getElementById('steps_area');
//loop over array of steps and print them to steps div
var length = step.length;
for(var i=0; i<length; i++){
var divTag = document.createElement("div");
divTag.id = "step" + i;
divTag.className = "steps";
divTag.innerHTML = step[i];
problem_area.appendChild(divTag);
MathJax.Hub.Queue(["Typeset",MathJax.Hub,'step' + i]);
}
// MathJax Queue for processing latex that javascript filled in
MathJax.Hub.Queue(["Typeset",MathJax.Hub,'problem']);
}
Hi I am trying to make all the cells within a table droppable spaces, using the scriptaculous library. However I am not able to do so, and I am not certain why. The table cells are creating within the javascript. I then try to apply the droppables to the table cells through iteration, through the function when the document loads. It does not seem to be working. The document accesses an external php page and has inline php within a div element. I am uncertain if by having the draggable elements instantiated within the php script, that this would be causing any problem, as I cannot see how this would be, the php draggables all appear to be corresponding to the css in the document. Any help with the droppables would be appreciated. I have set up a css class hover, so that when the draggable passes over the droppable the edges of the droppable area should be turning blue, but this is not happening. Not sure what the problem is. Code: <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 3.2//EN">
<HTML>
<HEAD>
<META name="generator" content="Free Script Editor, see www.freescripteditor.com">
<TITLE>Email Client</TITLE>
<link rel="stylesheet" type="text/css" href="http://localhost/email/styles/style1.css"/>
<script src="javascript/prototype.js" type="text/javascript"></script>
<script src="javascript/scriptaculous.js" type="text/javascript"></script>
<script src="javascript/dragdrop.js" type="text/javascript"></script>
<script src="javascript/controls.js" type="text/javascript"></script>
<script src="javascript/effects.js" type="text/javascript"></script>
<script type="text/javascript">
var xmlhttp = false;
//check if we are using IE
try {
//If the javascript version is greater than 5.
xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
alert ("You are using Microsoft Internet Explorer.");
}
catch(e)
{
//if not, then use the older active x object.
try {
//if we are using Internet Explorer
xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
alert("You are using Microsoft Internet Explorer");
}
catch (E)
{
xmlhttp = false;
}
}
//If we are using a non-IE browser, crea a javascript instance of the object
if(!xmlhttp && typeof XMLHttpRequest != 'undefined')
{
xmlhttp = new XMLHttpRequest();
alert ("You are not using Microsoft Internet Explorer");
}
function getmessage(inbox_id)
{
var object = document.getElementById('content');
var server = "getmessage.php?inbox_id=" +inbox_id;
xmlhttp.open("GET", server);
xmlhttp.onreadystatechange = function()
{
if(xmlhttp.readyState == 4 && xmlhttp.status == 200)
{
object.innerHTML = xmlhttp.responseText;
}
}
xmlhttp.send(null);
}
function addTable()
{
var dv = document.getElementById("right");
var table = document.createElement("table");
var tbody = document.createElement("tbody");
var x = 0;
//create the table rows
for(var j =0; j <=2; j++)
{
var row = document.createElement("tr");
//create the table columns
for (var k =0; k<=4;k++)
{
x++;
var cell = document.createElement("td");
var celltext = document.createTextNode(x);
cell.appendChild(celltext);
cell.setAttribute("className", "droparea");
cell.setAttribute("id", "x");
row.appendChild(cell);
}
//add the row to the end of the table body
tbody.appendChild(row);
}
table.appendChild(tbody);
dv.appendChild(table);
table.setAttribute("className", "tbl");
}
document.observe("dom:loaded", function()
{
var dh;
var cells = document.getElementsByTagName('td');
for (var z = 0; z <= cells.length; z++)
{
dh = cells[z].getAttribute('id');
if(dh)
{
Droppables.add('dh', {accept:'draggable', hoverclass: 'hover'});
}
}
});
</script>
</HEAD>
<BODY onload="addTable()">
<div class="container" id="container">
<!--header div - for message 'new', 'reply' -->
<div class="header">
<script type="text/javascript" src="buttons/header_nav.js"></script>
</div>
<!-- end of header div-->
<!--Begin the div class left - this will hold the inbox emails for review-->
<div class="left">
<?PHP
include ($_SERVER['DOCUMENT_ROOT'].'\email\database_connect\connect.php');
$str = "id";
$i = 0;
$inbox_query = "select i.inbox_id, i.to, i.subject, i.sent, i.message from inbox as i";
$inbox_result = mysql_query($inbox_query);
while($row = mysql_fetch_array($inbox_result))
{//start while trainer query
$inbox_id = $row['0'];
$to = $row['1'];
$subject= $row['2'];
$sent = $row['3'];
$message = $row['4'];
$i++;
echo "<div class='draggable' id='$str$i'>
$inbox_id $to $sent <a href='#' onclick='getmessage($inbox_id)'>$str$i $subject
$message</a>
<script type='text/javascript'>
new Draggable('$str$i', {scroll: window});
</script>
</div>";
}//end while inbox query
?>
</div> <!--end left div-->
<!--begin the right div - this is the right side of the screen frame for
postponed email area-->
<div class="right" id="right">
</div>
<!--end the right div element-->
<!--begin the main content div - this will hold sent message-->
<div class="content" id="content" overflow="auto">
</div>
<!--end content div-->
</div>
</BODY>
</HTML>
Right now when someone clicks on my listbox I immediately do an update on the form to populate the selected item. Is there a way to detect if a user has clicked on some white area of a list box? If my list is sized 8 items but the list only has 4 items, if the user clicks near the bottom of the list where there is no item to select, can I detect that? Currently I get the form updating even if I click on the white area of the list and I'd like the form to update only if I actually click on an item in the list. Thanks |
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