The following code returns the width and height as: undefined in the alert. I can`t see what i am doing wrong here. I would like the width and height of the chosen image to be displayed in the alert.
<html>
<head>
<script type="text/javascript" language="javascript">
function getImageSize() {
[code]...
Is there any way to determine the pixel height and width of an originalimage?
Specifically, If I have <IMG id=myImg src="pic.jpg" height=200 width=300> can I figure out what the original size of pic.jpg is (had I not placed the height and width attributes on the image, whether in the original tag or later via javascript)?
The position and visibility of the image element is dynamically updated.The following code displays the correct dimensions in Firefox 3.0.10 and Chrome 1.0.154.65, but displays "0,0" in IE8.
View 1 Replies View RelatedSo I'm working in a project where I need to get the dimensions of an image. If I use .height() of the image I get 0 returned, but if use .height() on its surrounding div I get the image's height returned.I need the height and width of the actual image, what should I do?
View 8 Replies View RelatedI am rotating images at one location of my web site. My problem is if I set the width and height of the new image before I show the new image, the old image is stretched first to the new image dimensions, and if I show the new image before setting its dimensions, the new image is stretched first to the old image dimension before it is adjusted to its own dimension. I would like to load a new image with its own dimension at the same time. How can I do this?
View 5 Replies View RelatedI have some CSS/javascript which takes an image and re-sizes it on a page with a hover-over state which causes it to expand. However, this will only re-size to specific proportions (in this case 1:1).
This is fine in the case of e.g. an 86x86 image but what I want to be able to do is detect if the image has a height greater than it's width, and if so, crop the image accordingly to make it a square.
Is there a way of doing this with javascript?
I have a photo gallery built with XML and PHP (pulling images from a client's Myspace albums).The gallery works fine, displays thumbnails and captions, paginates properly, etc.The whole thing is loaded by AJAX into a div, which complicates things a bit, but it works.When a visitor clicks a thumbnail, the full-sized image displays in a div overlay on top of the gallery div.The overlay is hidden until a thumbnail is clicked, when it is toggled to "visibility:visible". When the overlay "close" link is clicked, the overlay is hidden again.That also works. Some of the images are too large to display properly inside the div without throwing off the layout, so I had to set a max height and width.I can't just use CSS to set the dimensions or it'll size EVERY image to those dims, and the photos are all different sizes...some wider, some longer.So I used javascript to check the image size when the thumbnail is clicked.
All of that worked.(Although strangely, if I try to toggle the visibility as part of the function rather than putting it into the link, it doesn't work!)The problem is that once the dimensions of "img1" are set, they STAY that size even when the next thumbnail is clicked.So if the first image is 800px tall, the script crops it to 640px...then the next image may only be 400px pix tall but it displays as 640px high, making it distorted.I tried to add a "resetImgSize" function to the "close" link in the overlay, setting the img1 dimensions back to 2px x 2px when the overlay is closed, but the same thing happens...Once the img1 dimensions are set to 2x2px, they stay that way even when a new thumbnail is clicked.
I will have two text boxes that will accept numeric values and an image. What I need is if the user change the value of box 1, the value in box 2 will automatically update depending on the pixel dimensions of the image and vice versa.
Basically I need to automatically calculate the pixel ratio of an image and then use that value to multiply by the user inputted size.
I have also Googled this issue plenty of times, but nothing seems to be working 100% and/or the "solution" found is several years old.I have a text field on a webpage where a user enters in a URL to an image and then clicks a button to preview it. I want to restrict the image's size, so if it is larger than 600x450 then it will be automatically resized to those dimensions.The problem I have with this code is that the myImage.onerror event always fires if the image is large. My question is: how do you make the script "wait" for the image to load completely before trying to retrieve the width and height? Or, even better, how do you prevent the image failing to load?
Also, I know how to get the image's dimensions via PHP; however, according to the getimagesize() function's documentation on php.net, the function downloads the image to the server before retrieving the image's width and height, which could be potential trouble if a malicious or ignorant user enters a URL to an excessively large image.
I'm having two issues: First, is there an easier way for my showValue function to display the image file name without running a bunch of if statements? I tried doing something like document.getElementById('imgFile').value = imgArray[n]; but that did not seem to work.
Second, I'm trying to have the image file name change in my textbox when I click any button. I've accomplished this with onblur, but that only works if I click on the textbox. I'd like it to just change automatically.
[Code]...
How to display an alert message with a scroll bar attached?
If this is not applicable, then how to display a popup message with a scroll bar, which acts completely as an alert message in its behaviour, meaning that the user can not act on the page except when he confirms the alert?
how to get the alert box to display in text instead. So when the user clicks on the submit button instead of an alert box, the result would display below the button in text instead of an alert?
<script type = "text/javascript">
function validate (form){
var hrs=(form.hrs[0].checked)? form.hrs[0].value : form.hrs[1].value;[code].....
I have been being banging my head against this for hours. I have an iframe that contains XML. All I want to do is display the XML content in a JavaScript alert. Here is what I have figured out.
This code retrieves the XML document object from the IFrame.
So I tried a simple alert on this and I receive the message:
So I think at this time, I have an XML Object.
So I tried this code:
Code:
Running this code, all I get back is an empty alert message which has me confused.
Is there a way i can return an error through my JS which is then displayed in an alert box ?
I currently have this:
Code:
Now in pck.php if i had Echo 'Test';
I want my JS to check something was echo'd and if so - display it in an alert box to the user.... any idea if thats possible ?
I have a classified listing application (php) that shows an alert message on the main page to let the user know if there was an error, if the listing was entered, if a required field was left blank, etc.
the simple jquery code is:
$('#alert').fadeIn("slow");
setTimeout(function() {
$("#alert").fadeOut(3000);
}, 4000);
the alert msg. displays whenever the page is loaded. However, if someone navigates with the forward or back buttons in the browser, or reloads the page, the alert message displays again.
I am pulling my hair out for a solution that shows the alert only once and then does not show an alert again until a new message is generated.
I want to display instruction in an alert box.
I query database to get this instruction. I have an instruction which has semicolons in it.
Ex: NO STATUS ON DEED; OLD NUMBER 805;
How do I display the above sentence in alert box? code...
I tried to display an alert window (avoid pop up since some users blocks it and hence not displayed on onload event in body) But it is not displayed properly like popup window.
View 1 Replies View RelatedSo, I am in a Web Development class right now for my liberal arts science credit. We are on a lab dealing with JavaScript and half of it is making the values of some check boxes and stuff show up when the user clicks a "Display" button. I'm not sure I'm explaining it well. Here's the lab:
# In lab 6 you wrote a JavaScript function that displayed the name and email entered from the form. Extend that function to display all of the information the user entered in the form (name, e-mail, region, special interests, interest level, and comments). See if you can nicely format what shows in the alert message. The following hints should help:
1. The first step is to make sure that each GUI field has an id attribute set. For example the name field might have id="name". Remember, every id value must be unique. Two radio buttons will have the same name attribute value, but their id attributes must be unique. You need to do this so JavaScript can find the tags using the document.getElementById method.
2. To display your checkbox information, you will need to include logic as described in the following steps. Once you do this, do the same thing for the radio buttons.
1. Assume you have a checkbox with id="cherokee". Of course, your id attributes will likely have different names. The general steps will be the same, but substitute your names where I'm using "cherokee".
2. The following statement creates a Boolean value (true, false) that determines if the user checked the cherokee checkbox. The checked property in checkbox and radio button objects gives this information.
[Code]...
I am trying to get a checkbox to display an alert when the user clicks the checkbox for "other". Then if they click it again to unchedk it, it should not display the alert again. I keep getting an message that says not an object. Can anyone help me out with this? I have copied the code below for the checkboxes and the code that is in my .js file....
View 1 Replies View RelatedMy requirement is to show the alert message in javascript in bold. I tried with alert("<b>Hello World</b>");
View 3 Replies View RelatedI need to display an alert if you select two checkboxes, this isn't regarding validation, it pops a special message if you select 2 related products.
HTML
<input type="checkbox" name="News" value="IQBAS" id="IQBAS" />
<input type="checkbox" name="News" value="IQPRE" id="IQPRE" />
[Code].....
doesn't work, nor has anything else.
I basically want to catch any ajax request sent by my app and display an alert.I have tried this to no avail:
<b><font size="1"><span style="font-family: courier new,monospace;">jQuery("*").ajaxSend(function(event,request, settings){</span><br style="font-family: courier new,monospace;">
[code]....
I'm trying to run through the simplest tutorials on jquery and for some reason I can't get any of the jquery code to work.I've downloaded jquery and I've made sure that this file is in the same directory as jquery-1.3.2.js.This is the code taken from the tutorial:
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">[code]....
when the user clicks on the link it shouldn't take them to [url]....instead it should display an alert box. but it takes me to[url]...every time.
I need to display alert when I close the browser window. Now I am using the following code to display the alert. But the alert is getting displayed even I click on any links. But the alert should not displayed when i click the link.
This is my code:
I'm relatively new to jQuery, and I don't understandy why the following doesn't work. Hopefully, you can enlighten me. I declared a variable: var currHive = $("#masterHive") .find("div.currentHive"); Now I want to see if the query returned the correct element id. So, I tried each of the alert messages shown below, one-at-a-time. This is the strategy I am using to verify the code; i.e. do something, then tell me what I did.
$(document).ready(function(){
var currHive = $("#masterHive") .find("div.currentHive");
alert(currHive).attr(id);/* returns object Object */
alert(currHive.id);/* returns undefined */
alert(this.id);/* returns undefined */
alert($(this).attr('id'));/* returns undefined */
});
Note: I have successfully used --- alert($(this).attr('id')); --- in an experiement to tell me which button was clicked, in a statement using the .bind() method.
I am going to concatenate these 2 input values together and display the result in an alert box. These two input are from two prompts.
[Code]...
