i try to figure out how to calculate string width in a textarea while
typing in it. the textarea has a fixed start width. when the string gets longer as
the textarea width, the textarea should be made bigger while typing
programatically.
my only problem is to determine the size of the string in the textarea.
i know the font family and font size.
Here are sample division code...
The <div class="child"> width value is always 10 pixels less than <div id="parent"> width value. How can it be calculated so any width value is given to <div id="parent">, its child gets 10 pixels less than that?
Is there any way that one could have supersubs functionality applied to drop-down multi-column menus?I assume one would need to calculate the width of each column plus the combined width for the container.
View 1 Replies View RelatedI want to automatic calculate the width of a child div. I have a parent with a fixed with and two children in there. The first has a flexible width due to his content (title of post) and is transparent. The second child contains only a background image and should always fill the rest-width. I tried it like this but it doesn't work [code]...
View 3 Replies View RelatedI am retrieving titles from a database and then displaying them on screen. However when I display them I must make sure that they fit inside a certain rectangle. If it deosn't fit then i must reduce the font size and recalculate until it fits. The title is in two parts Code:
View 1 Replies View RelatedI understand that if I have an element in my document tree, I can use getComputedStyle() to determine its width based on CSS styles.
I want to dynamically create some elements to populate a given div, but I want the size of these elements to be controllable via CSS. When dynamically populating the div, I need to determine how many elements will fit. Currently, I have to add an element to the div first so its size will be calculated, then I can base my calculations off of that. However, this seems like not a great way to do ti.
Is there some way to ask for the size of an element to be calculated as if it were part of the document tree? That way, I could make my changes all at once.
writing a function that will dynamically calculate filed values.I have a PHP-generated form which may have a varying number of fields. I need to:
1. calculate the line total for each row -- unitprice * units = linetotal
2. calculate total of all linetotals.
I have named my fields as follows:
unitprice[1], unitprice[2]... , units[1], units[2], ...
I have the following calculate function:
function calculateOld() {
// get both values
unitprice = document.forms["invoice"].unitprice.value;[code].....
This does calculate what I need but only if I have up to two rows. I need to make the function dynamically count how many rows there are, and calculate the linetotal for each row. And here's where my limited JS knowledge brings me to a halt.I have been thinking about what this new and dynamic function should look like, but that's the best I could produce...
function calculate() {
var unitprice[i]= document.forms["invoice"].unitprice[i].value;
var units[i]= document.forms["invoice"].units[i].value;[code]....
how things are done, don't just give me the code.
I've created the code below which automatically adds two fields together (drop-down boxes),without the need for a submit or input button.Now,I am trying to do the same again, but this time instead of having drop-down boxes,i need to have text input boxes.(eventually i will be adding monetary values together).
-----------
<script type="text/javascript"><!--
function updatesum() {
document.form.sum.value =[code]......
1) I need to calculate a total dynamically.I have an input with the price of a product and next the amount. As the users inserts the amount I would like the total box to give the amount*price number. So if the price is 3 and user inserts:
1 - then total should display 3. Then the user inserts 0 (amount is now 10) total should display 30.The problem is that when i ask for the value in the onkeyup event of the amount input i don't get the value with the last key (same with onkeypress event). I could add that number (if it's a number) or see if it's backspace or any char but there should be an easy answer.I solved it by setting a timeout and using a callback function so as to have the latest value of the amount but it's an awfull solution (though not expensive in code).
2) Avoid focus reset when i update the value of the amount.I've managed to add commas on the fly to the amount like when the user types "1000" the number displayed is "1,000". In firefox it works great but in IE and Chrome it resets the focus each time i update the field. So when you try to move your cursor back it returns to the last position (maybe because the value of the input is changed).
here's my code:
Code:
function updatePrice(){
setTimeout(function(){callback()}, 10);
}
[code]....
I am trying to calculate text fields from results of php query. My fields come from the query as amount1, amount2.... What I need is for JS to Sum those fields dynamically, I already did code for when i have all the values and for when the text field name is the same, but never for query results where the names are different. This is what I have so far but its not working
function calculatesumexcon() {
var a, total = 0;
var countJS = "<?=$count?>"; <-- variable of php that gives me the number of rows I am getting on the query
var i ;
for ($i=0;$i<countJS;$i++){
var elements = document.getElementsById('amount' + i);
for(a=0; a<elements.length; a++){
total += (parseFloat(elements[a].value));
}}
document.getElementById("totalextracon").value = total ;
}
Here's a sample division:
Code:
<div style="padding:0 0 0 40px; background:url(comment-icon.png) left center no-repeat;">some text</div>
I wonder how I can calculate the padding-left:40px dynamically so that any icon I choose the padding-left value changes according to the image width.
I am trying to create a very long dynamic document with fixed width
for the cells of my table iin HTML, I need to truncate some of the
information that I display to fit in the table.
As the document is very long I can not use the offsetwidth
functionality of the cell because then the user will see the
information being truncated, which is not desireable, I was wondering
if there is any way of calculating the width of the text displayed in
the "risky" rows on the fly before the whole document gets rendered.
I tried to display the information in the row and then try to truncate
it right away after using the offsetwidth to see the width of the text
in pixel, but this is not working as the offsetwidth needs the whole
document to be rendered before being able to calculate the exact
value.
can a table width be set dynamically with javascript by referencing the users browser window dimensions or the users video settings? ie: if the user video is set 1280 or less, then the table width is 75%. if the video is above 1280 then the table is 800 pixels.
it may not be a good thing to do, but i like percentages on tables except with large display settings. is it too much overhead?
another thought: would it be easier to implement server side with asp/vbscript?
If I have a div that's 300px by 20px, is there a function that calculates whether a string will display with a line break, given font-size of 21px? If not, I'll have to create some code, but if it's already available, that's even better
View 13 Replies View RelatedThis script changes the image, I wanted to know if there is a way to automatically resize the div's height and width based on the actual image proportions.
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
[Code]....
How can i set the width of a drop down list dynamically ie. to the length of the selected option.
View 1 Replies View RelatedTo build a horizontal floating menu that matches the first row (header row) of my dynamically built table (to include text and cell height/width - needs to match exactly). I have accomplished 90% of this task by extracting the text and building the row in my floating menu header and placing the floating menu where it needs to be. However, I'm having a problem aligning the table (<TD></TD>) cells because of my dynamically built table.
Scenario:
I have a table that is built dynamically. Before it is displayed, I format the table row data (code that adds text/deletes rows etc…), which alters the width of all the table cells (via JavaScript). We'll call this (for lack of a better phrase) "pre_floater_table_format_code."
I then loop through the DOM (<TD></TD>) in the first row of the table to get the text and width from each cell (using offsetWidth and/or clientWidth) and assign the text and cell width(s) to variables that I use to build my floating menu with. We'll call this (for lack of a better phrase) "get_cell_text_width_code."
Problem:
The problem is that once the table is built (and before it is altered by the "pre_floater_table_format_code") it seems as though my "get_cell_text_width_code" reads the un-processed table cell width(s) and sets these variables to the un-processed width values. The "pre_floater_table_format_code" runs much earlier than the "get_cell_text_width_code." So why wouldn't the "get_cell_text_width_code" read the cell width(s) after they've been adjusted by the "pre_floater_table_format_code?" Does this make sense? Anyone have any recommendations? Alternative solutions?
I have the task of creating an asp page that generates a standard email newsletter. The HTML Image Width and Height tags need to be set to the actual image size (no they haven't been set to a standard size on the server) as they are read in via an while loop. I believe in ASP, you are out of luck for a function that does this, so Javascript may be the way forward.
My code is as follows for the image inside an anchor tag, as you can see i tried the min and max style properties for the image, but this does not set them exactly. e.g. width="120px" height="94px", which is what is required.
I'm experimenting with dynamic loading of javascript using JQuery. So basically I have a loadScript function that accepts either the URL of a JS file or a javascript source in a string. For the former, I create a 'script' element, set its src attribute to the URL of the file and insert the element into the DOM's head element. So far it seems to work nicely. For the latter, I create a 'script' element, set its innerHTML to the JS string and insert it into the DOM's head element. This doesn't work so well. I *think* it's because the JS source in question contains:
$(document).ready(function() {
// put all your jQuery goodness in here.
});
It looks like the JS source in my string is stomping over parts of the DOM it shouldn't and changing existing elements.
I need to pass the selected option of a <select> tag into a query
string, so that the page is reloaded with the selected option already
chosen. This will occur with the onclick() event hander, and the query
string will be processed using a server-side technology. I'm just not
sure how to word the "onclick" handler. Here's what I have:
<select id="StartMonth" name="StartMonth" onchange="location.href =
'thispage.cfm?StartMonth=_______'">
What is the correct wording to set the underlined portion to whatever
was selected? I know it has to be done with JavaScript, since the
decision is made on the client-side.
From WebForm1.aspx, I have successfully retrieved a string that is dynamically generated in WebForm2.aspx and spit out to a Literal control in a div. This is what I did.
//In WebForm1.aspx, I have:
$.post("WebForm2.aspx", { para1: "value1", para2: "value2" },
function(data) { $("#mydiv").html($("div#div1", data).html()) });
That's pretty simple and easy to understand for you jQuery gurus out there.
Now, I am trying to do the same thing within the single web form. That is, in WebForm1.aspx, I have this jQuery script to post to the same web form (i.e., WebForm1.aspx), but it is not working. Postback works OK, but I am not able to retrieve the dynamically generated string and spit it out to mydiv.
What's the jQuery way to do this? Any example? I searched, but I've only found examples which try to get static string values, which I know how to do.
let me try to explain better what I'm trying to do. I'm a real newbie I don't know much javascript but I understand more or less the logic behind it... tell me if this solution should work and if you know how to do it please show me. [URL]... I need to make div#photo's width to match the total width measurement of all the images it contains. If you load the page and you don't touch the size, it will work fine... but that's not realistic. If I resize the page, which will happen often on this kind of page (I'm assuming), the whole thing goes haywire (try it, scroll to the last image and resize the page you'll see what I mean). What can I do? Is my idea the right solution? Am I not explaining this clearly enough? Let me know please, I'm desperate. I've been trying to get CSS to do this for me for 3 hours now. Nothing works.
View 6 Replies View RelatedI currently have a website where i share thoughts with my friends (some kind of forum) and within this 'forum' people can post pictures they made but most of the time these pictures exceed the max width of my website so my website gets all streched out!So this is what i want: all images on the page must run thru some sort of function which checks if the image image width exceeds the max_width. if it does then the script must calculate how many pixels the current width exceeds the max_width and get this number so that the script does: current_width = current_width - (max_width - current_width)
View 1 Replies View RelatedI've recently start using Flexigrid (old JQuery grid plugin), and, as you may know, one of the few issue this really good grid plugin got is the lack of liquid layout option. My personal idea to solve the problem is to set the "width" parameter depending on $(window).width. Here is the problem (and here's why i post this question in "General use" and not in "Plugin").
The starting, and working, code is:
$(document).ready(function(){
$("#flex1").flexigrid
(
{
[Code].....
This work fine for me, but I supose it could be done way much elegant... maybe somethin without "IF" that could emulate the "%", like var percentage = $(#div.id).width()*0.XX with the 0.XX picked from an array of percentage, one for each column. Probably I should set up a function... ahhhh, as you may easily see I'm a total beginner with JQuery (and JS in general...)
I am trying to setup a javascript function that sets a div's width based on the combined width of the li's with the name "navItem". The problems I have been running into when trying to define the width of the li's is that they do not have a width defined in css. Can anyone help me out with this? The javascript function setWindow is suppose to show the div loginWindow and set the width of it.
Code:
<div id="topNav">
<ul>
<li><img src="<?php print $site->folder['images']['header']; ?>topmenu_left.jpg" border="0" alt="" /></li>
<li name="navItem"><a href="<? print $site->url['about']; ?>">About Us</a></li>
<li name="navItem"><a onmouseover="setWindow('loginWindow');" href="<? print $site->url['billing']; ?>">Client Services</a></li>
[Code]...
Is the next jQuery code the best way to decrease an elements width?[code]I tried using the next code:[code]but that's not working, also not with '-20'.Maybe it's an idea to add this functionality? It's is already used in the .animate() function for changing the position of an element.
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