|
JavaScript - Which Page Is Loaded? And Its Comparison
i have an iframe on my webpage and i am loading appropriate page in it by clicking
appropriate button but when user logs out and at that time some page is opened in iframe corresponding to the login pages(like "edit profile") of user then at that moment i want to know that what page is loaded in iframe so that i close it(if it corresponds to pages of login like "edit profile") as user logs out and if it does not correspond to login pages then it remains as it is.For doing that i must know that what page is loaded in iframe and compare it in " if(condition){statement} in logout function" with the logion pages so that i know that if any of them is loaded in iframe and if loaded then close it.Can you help me with that by giving exact code example. Similar TutorialsHi all, I am facing problem in preventing my web page being loaded into an iFrame. I search in internet and found this solution : if (self == top) document.documentElement.style.display = 'block'; else top.location = self.location; The above java script code is simple redirecting me to the home page of my web site. But I donot want that kind of solution. When anybody tried to access my web page through iFrame, it should show an error message like "The content of the web site cannot be loaded into an IFrame". This message should be displayed inside the iFrame. For example, if we tried to access "google.com" site in an iframe, the website should not allow the iframe object to load into it, insted it will display an error message along with a provision to open webiste with an external link with it. Any help? thanks, -Sanath Im running js to do some color coding in a table, i tried adding the onload but its not working, can someone take a look ? I need this to run when the entire page is fully loaded and not before. THE FUNCTION Code: var table1_column_settings = [
[32,40], // ito score - First column values more than 5 will be red, 2-5 will be yellow, less than 2 will be green
[11,12], // schedule
[14,15], // cost
[11,12], // execution
[9,10], // commercial
[41,50] // total
];
// Loop through all cells in a table, coloring each one according to column-specific thresholds
function color_cells(table, column_settings)
{
// How many rows are in the table?
var num_rows = table.rows.length;
// Loop through all rows.
for (var r = 0; r < num_rows; r++)
{
// Get a reference to the current row.
var this_row = table.rows[r];
// How many cells are in this row?
var num_cells = this_row.cells.length;
// Loop through all cells in this row.
for (var c = 0; c < num_cells; c++)
{
// Get a reference to the cell.
var this_cell = this_row.cells[c];
// Get the numerical value of the first (and only) node inside the cell.
var cell_value = parseFloat(this_cell.firstChild.nodeValue);
// If it's a number (literally if it's not not not-a-number)
if (!isNaN(cell_value))
{
// Apply the color according to the thresholds for this column number (c).
if (cell_value > column_settings[c][1]) this_cell.style.backgroundColor= "red";
else if (cell_value > column_settings[c][0]) this_cell.style.backgroundColor= "yellow";
else this_cell.style.backgroundColor = "green";
}
}
}
}
EXECUTE THE FUNCTION Code: </TBODY>
</table>
<script> color_cells(document.getElementById("table1"), table1_column_settings);</script>
//I TRIED LIKE THIS <script> window.onload=color_cells(document.getElementById("table1"), table1_column_settings);</script> AND IT DIDNT WORK
hi, on my page: here the logos are greyscale but when the page is loading they flash up in colour?! could this be avoided and hidden? here is my Javascript o apply greyscale to my logos Code:
$(window).load(function(){ // On window load. This waits until images have loaded which is essential
// Fade in images so there isn't a color "pop" document load and then on window load
$("#our-work img").animate({opacity:1},500);
// clone image
$('#our-work img').each(function(){
var el = $(this);
el.css({"position":"absolute"}).wrap("<div class='img_wrapper' style='display: inline-block'>").clone().addClass('img_grayscale').css({"position":"absolute","z-index":"998","opacity":"0","margin-left":"64px;"}).insertBefore(el).queue(function(){
var el = $(this);
el.parent().css({"width":this.width,"height":this.height});
el.dequeue();
});
this.src = grayscale(this.src);
});
// Fade image
$('#our-work img').mouseover(function(){
$(this).parent().find('img:first').stop().animate({opacity:1}, 1000);
})
$('.img_grayscale').mouseout(function(){
$(this).stop().animate({opacity:0}, 1000);
});
});
// Grayscale w canvas method
function grayscale(src){
var canvas = document.createElement('canvas');
var ctx = canvas.getContext('2d');
var imgObj = new Image();
imgObj.src = src;
canvas.width = imgObj.width;
canvas.height = imgObj.height;
ctx.drawImage(imgObj, 0, 0);
var imgPixels = ctx.getImageData(0, 0, canvas.width, canvas.height);
for(var y = 0; y < imgPixels.height; y++){
for(var x = 0; x < imgPixels.width; x++){
var i = (y * 4) * imgPixels.width + x * 4;
var avg = (imgPixels.data[i] + imgPixels.data[i + 1] + imgPixels.data[i + 2]) / 3;
imgPixels.data[i] = avg;
imgPixels.data[i + 1] = avg;
imgPixels.data[i + 2] = avg;
}
}
ctx.putImageData(imgPixels, 0, 0, 0, 0, imgPixels.width, imgPixels.height);
return canvas.toDataURL();
}
Hi, I have a site that runs a javascript slideshow automatically when a user visits it. It is designed in such a way that I cannot pre-load individual images for aesthetic reasons. (Also the whole concept makes my brain hurt.) I therefore need 1 of 2 things: 1. A preloader that doesn't show the page or start the slideshow until all the images are loaded. or 2. I could start with the slideshow paused, and when the page is fully loaded, the play command (currently attached to a 'play' button) is 'sent'. (I'm not techy, so this is the best I can do as explanation.) The latter would probably be more elegant, especially if ultimately I could hide the controls for the slideshow with a loading bar until all the html is loaded, and then show them when the slideshow starts. I'm sorry if this is a really basic question. I tried searching the site but couldn't find anything. If you do feel like answering, can you imagine that you are speaking to a 5 year old. Then dumb it down a bit. I need all the explanation and clarity I can get! Thanks! I am having problems calling a JS function from asp.net code behind button click after some code is ran. The first time the button is clicked and it calls the JSfunction the readyState = loading and it cannot find the element. The second time the button is clicked the readystate is complete and it finds the element. Anybody have any suggestions? Here is the code behind ClientScript.RegisterStartupScript(Me.GetType(), "CC", "<SCRIPT language='javascript'>parent.abc('button1')</SCRIPT>") and javascript function abc(src) { if (document.readyState == 'loading') { alert(document.readyState); } else { document.getElementById(src).click(); } } The project I am working on involves a flash piece that communicates with a iframe. Currently the flash piece just calls on javascript functions. I want the buttons in the flash piece to be able to change the src of the iframe. PHP Code: <script type="text/javascript"> document.getElementById('video').setAttribute('src',address2); function closeVideo() { document.getElementById('video').style.height='0px'; return false; document.getElementById('video').setAttribute('src', address2); } function openVideo() { document.getElementById('video').style.height='391px'; return false; document.getElementById('video').setAttribute('src', address); } </script> So the way the code works now is when the page loads it sets the iframe with the id of 'video' to the variable address2 which it pulls from an XML file. In the flash piece when a button is hit, it calls openVideo() which "opens" the iframe and I want it to change the contents to address. This does not work though. It opens the frame but will not change the src. I've tried a bunch of different things now such as make the flash target the iframe using navigateToURL(request1, 'video'); but in Firefox and IE is opens it stills as if I had _blank in there. It does strangely work in Safari. Any ideas how to get this to work? I'm new to javascript so it could be something basic I'm overlooking Im very new to java scripting so any help would be truly appreciated. I have a single web page that loads several iframes. One of the iframe pages has to be logged in first. I have that taken care of but once the page is loaded I need to change the source to a link with in the page. My guess is I need something to execute the code like a onload or something. This is what Ive been trying to get to work but like I said a newb! The iframe in question is named "cad" the initial source once loaded is 'https://urlname.com/mainmenu.asp' the source I need to change to is 'https://urlname.com/UnitStatusF.asp?agency_id=28' [CODE] function ChangesSrc() { var iframeid = document.getElementById(cad); var unitstatus = 'https://urlname.com/UnitStatusF.asp?agency_id=28' if (iframeid.src = 'https://urlname.com/mainmenu.asp') iframeid.src = unitstaus; return false; } [[CODE] My source : Code: <html>
<head>
<title></title>
<script type="text/javascript">
function runcode(cwin)
{
cwin.location.replace("javascript:alert("Loaded complete")");
}
function newtab()
{
win=window.open("http://www.google.com");
setTimeout("runcode(win)",5000);
setTiemout("win.close()",7000);
}
</script>
</head>
<body>
<input type="button" value="Click to open newtab" onclick="newtab()" />
</body>
</html>
I want after newtab is opened 5s, alert window will be opened with message:"Loaded complete". Then 2s it is closed. But it isn't what I expect. Please fix it for me. Thanks in advance! Hi, ive been asked to make a blackjack game in javascript but I have a little bit of a problem. When the page loads, it deals cards to the player and the dealer, showing which cards have been dealt and the current scores. When I press the HIT button, i need to add another card to the array player_hand_img, and the value of this card to player_hand. I have successfully created this code, but my question is, how do I update the information (the score and the cards) on the screen after it has loaded? Can you do this in JavaScript or do I need another language? Thanks very much in advance! I have a form with three fields. When the user changes the value of field1, the form displays either field2 or field3. This works fine for NEW records. However, I'm running into a problem when trying to EDIT an existing record. When the form is loaded, I need to test the value of field1 and display either field2 or field3. I've tried using the form onload event, but do not know how to access the value of field1. I'm using Javascript and div tags. This is what I have so far. <script type="text/javascript"> function hide(obj) obj1 = document.getElementById(obj); obj1.style.display = 'none'; } function show(obj) { obj1 = document.getElementById(obj); obj1.style.display = 'block'; } function show_other(optionValue) { if(optionValue=='C') { show('divClass');} else{hide('divClass'); } if(optionValue=='W') { show('divWorkshop');} else{hide('divWorkshop'); } } </script> /* Field1 - is a drop down list */ <select name="ClassType" size="1" onchange="show_other(this.value)"> ... </select> /* Field2 */ <div id="divClass"> ... </div> /* Field 3 */ <div id="divWorkshop"> ... </div> Appreciate any assistance. Thanks Peter Can a random page be loaded without a prior visit to a site? I have a list of 15 people with a photo and contact information in a table with 3 columns and 5 rows. The issue is that the people near the bottom want a chance to be at the top the first time the page is viewed. It is unlikely that a second visit would happen. Is this possible to load a random page for a site without it being viewed or logged into before, therefore no cookies will be used. My knowledge of Java script code is limited so any help would be great. Thanks Motty I doubt this is possible, but I have no idea what actually happens when a page loads, so I thought I would give it a shot... if a js file that is loaded externally has parameters, is it possible to turn those parameters into variables, giving the user the option to select the variable's value after the page has loaded? maybe a concrete example would be better... in google maps, the api is loaded like this: Code: <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false"></script> but if you wanted to specify that you want the api to function in Spanish, you load it like this: Code: <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false&language=es"></script> and that language=es is the one that I want to change. But I can't seem to make it into a variable on page load, like this: Code: <script type="text/javascript"> var lang="es"; </script> <script type="text/javascript" src="http://maps.google.com/maps/api/js?sensor=false&language=lang"></script> much less make it changeable once the page has loaded. I have a feeling that this is a really dumb question, but can it be done without reloading the entire page? Why alert('hua'); does not pop up ? Code: var cur_date = new Date();
cur_date.setSeconds(0);
cur_date.setHours(0);
cur_date.setMilliseconds(0);
cur_date.setMinutes(0);
alert(cur_date);
alert(new Date(cur_date.getFullYear(),cur_date.getMonth(),cur_date.getDate()));
if (new Date(cur_date.getFullYear(),cur_date.getMonth(),cur_date.getDay()) == cur_date )
{
alert('hua');
}
My code isn't working, the only part that is showing up in the webpage is the head. Can someone tell me what I am doing wrong. I typed it right out of the book; the way the book tells me to write it. Thank you. Code: <!DOCTYPE HTML>
<html>
<head>
<title>Comparison Operators</title>
</head>
<body>
<h1>Comparison Operators</h1>
<script type="text/javascript">
var conditional Value;
var value1 = "Don";
var value2 = "Dave";
value == value2 ? document.write(
"<p>value1 equal to value2: true< br />")
: document.write(
"<p>value1 equal to value2: false<br />")
value1 = 37;
value2 = 26;
conditional value = value1 == value2;
document.write("value equal to value2: "
+conditionalValue + "<br />");
conditionalValue = value1 != value2;
document.write("value1 not equal to value2: "
+conditionalValue + "<br />");
conditionalValue = value1 > value2;
document.write("value1 greater than value2: "
+conditionalValue + "<br />");
conditionalValue = value1 < value2;
document.write("value1 less than value2: "
+conditionalValue + "<br />");
conditionalValue = value1 >= value2;
document.write("value1 greater than or equal to
value2: " + conditionalValue + "<br />");
conditionalValue = value1 <= value2;
document.write(value1 less than or equal to value2: "
+ conditionalValue + "<br />");
value1 = 21;
value2 = 21;
conditionalValue = value1 === value2;
document.write(
"value1 equal to value2 AND the same data type: "
+ conditionalValue + "<br />");
conditionalValue = value1 !== value2;
document.write(
"value1 not equal to value2 AND no the same
data type: " + conditionalValue
+ "</p>");
</script>
</body>
</html>
Hello, I try to learn JavaScript and I've just come across something that I can't work out. I use the book of John Pollock: JavaScript, A beginner's guide, Third Edition. So, page 360 and this piece of code: Code: function getname() {
var the_text=window.prompt("Enter your first and last name","");
if (the_text.indexOf(" ") == -1) {
window.alert("Put a space between your first and last name. Try again.");
getname();
}
var split_text= the_text.split(" ");
if ((split_text[0].charAt(0) != "Z") || (split_text[0].charAt(0) != "z")) {
var shorter_fn_string = split_text[0].substring(1,split_text[0].length);
new_fn_name = "Z"+shorter_fn_string;
}
else {
var shorter_fn_string = split_text[0].substring(1,split_text[0].length);
new_fn_name = "W"+shorter_fn_string;
}
if ((split_text[1].charAt(0)!= "Z") || (split_text[1].charAt(0)!= "z")) {
var shorter_ln_string= split_text[1].substring(1,split_text[1].length);
new_ln_name="Z"+shorter_ln_string;
}
else {
var shorter_ln_string= split_text[1].substring(1,split_text[1].length);
new_ln_name="W"+shorter_ln_string;
}
window.alert("Now your name is "+new_fn_name+" "+new_ln_name+"!");
}
getname();
the thing is it ain't working. If I type in the propmpt window let's say simon simon I will get an alert of zimon zimon but if I type in zimon zimon it won't change to wimon wimon. I suppouse it's because of != comparison operator. If I use == instead of != and change the code the other way round inside if block then it works. Code: function getname() {
var the_text=window.prompt("Enter your first and last name","");
if (the_text.indexOf(" ") == -1) {
window.alert("Put a space between your first and last name. Try again.");
getname();
}
var split_text= the_text.split(" ");
if ((split_text[0].charAt(0) == "Z") || (split_text[0].charAt(0) == "z")) {
var shorter_fn_string = split_text[0].substring(1,split_text[0].length);
new_fn_name = "W"+shorter_fn_string;
}
else {
var shorter_fn_string = split_text[0].substring(1,split_text[0].length);
new_fn_name = "Z"+shorter_fn_string;
}
if ((split_text[1].charAt(0)== "Z") || (split_text[1].charAt(0)== "z")) {
var shorter_ln_string= split_text[1].substring(1,split_text[1].length);
new_ln_name="W"+shorter_ln_string;
}
else {
var shorter_ln_string= split_text[1].substring(1,split_text[1].length);
new_ln_name="Z"+shorter_ln_string;
}
window.alert("Now your name is "+new_fn_name+" "+new_ln_name+"!");
}
getname();
Why is that? Regards, Simon I would like to compare dates in the format used in twitter, which is this: Wed Apr 08 14:30:10 +0000 2009 How do I do this? Do I need to convert to a timestamp first, and if so, how do I do this? G are these right ya? '3' !=='smith' true "test" == "test " true '2' != 'smith' true "exam" == "Exam" true 5 === "5 " false "t" > "T" false "y" >= "p" true "Happy" == "happy " true I'm trying to get an emerge effect using javascript. Here is my code Code: var t;
var s=0;
function emerge()
{
document.getElementById('my_span').style.opacity=s;
s=s+0.1;
t=setTimeout("emerge()",250);
if (s>1)
{
clearTimeout(t);
}
}
}
Works fine, does the things right. But if I use this code, I get error. Code: var t;
var s=0;
function emerge()
{
document.getElementById('my_span').style.opacity=s;
s=s+0.1;
t=setTimeout("emerge()",250);
if (s==1)
{
clearTimeout(t);
}
}
}
The only thing I changed was comparison operator. I tried to debug by adding alert box Code: var t;
var s=0;
function emerge()
{
alert(document.getElementById('my_span').style.opacity);
document.getElementById('my_span').style.opacity=s;
s=s+0.1;
t=setTimeout("emerge()",250);
if (s>1)
{
alert("Opacity set to max");
clearTimeout(t);
}
}
}
For some reason, it does not enter the if block if I use "==" operator & the alert box keeps coming up with "1" in it. But works fine if I use ">" operator, enters the block and the last value it shows is "0.9". Can anyone explain as to why this happens? Hello everyone, for starters, I'm NOT working with arrays...with that being said, I need your help...I created a webform in PHP that retrieves values from a mysql table and displays them with its own mysqli_fetch_array command, in that loop it generates a textbox for each record...so far so good. The created textbox (input element) is so that the user can type in the sequential number of how to reorder the records...example Original Order of Records 1 Alpha 2 Bravo 3 Charlie 4 Delta 5 Echo and user needs it to be in this order User input sequential 2 Alpha 5 Bravo 1 Charlie 4 Delta 3 Echo the new order of the records will be saved on a temporary table in the database before insertion on the main table, kinnda like a preview for the new order, something like this: New Order of Records 1 Charlie 2 Alpha 3 Echo 4 Delta 5 Bravo Now what I need is a function that helps me display a message if the user duplicates a sequential unique, if they type in number 1 in 2 or more records, when I hit the button for the preview I need it to loop through all the input boxes and check their values, compare it with the other inputs and determine if there are duplicates or not....if there're no duplicates, continue with PHP code.....if there are duplicates, display an error so the user seeks for the duplicate and change it (inputs left in blank will not be considered for the insertion in the preview table) I already have this: Code: function checkall() {
const t='texto';
var contar=<?php echo $contar; ?>;
var text = ""
var conta = 1;
var contas= conta+1;
text = t+conta;
texto = t+contas;
//var curElement = document.activeElement.value;
var cv=document.forms['OrderPreview'][text].value;
//var cv=document.forms['OrderPreview'][curElement].value;
do {
//var cv=document.forms['OrderPreview'][text].value;
if (document.forms['OrderPreview'][texto].value=="")
{
return;
}
if (cv==document.forms['OrderPreview'][texto].value)
{
alert("Something Bad");
}
conta++;
contas++;
text = t+conta;
texto = t+contas;
}
while (conta<=contar)
}
Btw, the document.activeElement part of the code displays me "undefined" in the alert message, I still don't have a clue why, could you guide me with this please? I can't do but compare the 1st input with the rest of the fields, OR compare one field to the inmediate next field....it's driving me nuts Any help will be truly appreciated, thanks in advance |
|||||||