Ok, this seems easy, but I am struggling. I have this...
$("a[href$='mp4']").click(function () {
But I want it to work for mp4 or mov or more. Something like...
$("a[href$='mp4'||href$='mov']").click(function () { <-- which doesn't work apparently
I'm doing a bit of experimentation and would like a bit of advice if possible please.
In my switch statement I would like to use the || or operator, it works correctly it I set the case to 31, but if I try 1||31 it doesn't.code...
What kind of logical error am I making? I want the alert(); to execute if both of the variables (cjob and czip) are blank, but the only way I can get it to work is if I replace && with ||.
if(trim(cjob.value) && trim(czip.value) == '')
{
alert('Hello');
}
Why would one use bitwise operators? I can program in various languages in
some shape or form (C++, PHP, some scripting) and I've heard/seen bitwise
operators before, but never understood why anyone would use them - any real
world examples or ideas? Examples follow (that I am reading in my Core
JavaScript Guide 1.5).
15 & 9 yields 9 (1111 & 1001 = 1001)
15 | 9 yields 15 (1111 | 1001 = 1111)
15 ^ 9 yields 6 (1111 ^ 1001 = 0110)
in addition there are AND,OR,XOR,NOT and left and right shifts which would
only extend this post longer than nescessary...
--
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?
A: Top-posting.
Q: What is the most annoying thing on usenet?
Searched W3Schools site for information on JavaScript operators.
It doesn't seems to be an all inclusive source.
It doesn't have ? or :
I did learn what ? means from a book... But what does : mean/do?
a. only logical operators
b. only comparison operators
c. both logical and comparison
d. you cannot use operators with an if statement.
this is from my javascript book review for the chapter.
you can use both right? sounds silly i know but just want to make sure for my test.
We are required to create a javascript calculator. The page should has 3 text box, first and second text box would allow the user to input numbers, the third textbox will show the answer. the arithmetic operations should be in radio button, drop-down list and the select option. I'm still working on the radio button and i don't how to execute the operators. How to grab the inputted number from the textbox and how to execute the operators.
View 1 Replies View RelatedI'd like to ask if it is possible to use conditional operators
var = condition ? var1 : var 2
To do the same job as the if-else statements I wrote in red below:
<p id="text">change text colour</p>
<br />
<a onclick="allsorting();">sort in both ascending & descending orders</a>
<div></div>
<script>
/* if & else */
function changetext(){
document.getElementById('text').onclick = function (){
swapcolour(this);
}}
function swapcolour(text){
if(text.style.color == 'black'){
text.style.color = 'red';
} else {text.style.color = 'black'}
} window.onload = changetext;
</script>
Is it possible to create URLs from function call operators?
For example, I'm trying to program an onClick function which will load a
webpage in one frame and an image in another, based on the name of the
button which is being clicked. So clicking the button with name="help" will
open "webpages/help_page1.html" in one frame, and "images/help.jpg" in
another.
To do this I was hoping that the following would work, where the function
had been called by
function activate(buttonName) {
webpageURL="webpages/"+buttonName+"_page1.html"
imageURL="images/"+buttonName+".jpg"
parent.frame1.location.href=webpageURL
parent.frame2.picture.src=imageURL
}
But this doesn't work, because the browser (IE6) looks for
"webpages[object]_page1.html" and "images[object].jpg".
I've got a slide toggle script online and have got just one bit that I cannot figure out why. What is (toggled = !toggled)? What does it mean? Does that mean toggled = false? But I tested it, it seems not like that. And once the slide is toggled, it should use the minheight. Then the condition for var Height must be the opposite of (toggled = !toggled). Then what is (toggled = !toggled) like? Is that like (toggled != !toggled)?
<!DOCTYPE html>
<html>
<head>
<title>Avinash</title>
<style>
#slider {
margin:0px auto;
padding:0px;
width:400px;
border:1px solid #000;
background:#0f0;
height:0px;
overflow:hidden;
} .....
I have been looking for a way to give something back to this forum as it has helped me greatly, and I am hoping that this might be of value to someone.
Basically I was just tired of consistantly commenting and uncommenting out alerts in my code so I wrote some code that would allow me to keep my alerts and only show them when I wanted to, and only the types of alerts I wanted to show.
I thought that using bitwise operators would give me the flexibility to specify different options and a quick way of finding out what options were wanted. There are other ways of doing this of course, and this is one approach.
The bitwise OR operator "|" says if one of the two vars has the bit set, then set the bit.
the bitwise AND operator "&" says if both of the two vars has the bit set, then set the bit.
It starts with my bitwise values:
var NONE = new Number(0);// 00000000
var ALL = new Number(1);// 00000001
var INFO = new Number(2);// 00000010
var LOCAL = new Number(4);// 00000100
var PARAM = new Number(8);// 00001000
var COUNT = new Number(16);// 00010000
These values are really important. Earlier I used 0 through 5 and because of the way bitwise operations work, COUNT was equivelant to ALL and PARAM. what you are doing is blending bits and then getting a value. So, in the 0 through 5 approach, COUNT was 00000101 (5). When I OR'd ALL with PARAM I got 00000101 which was a result of 00000001 with 00000100 (4)! So be really careful if you go this route to double check that no combination of vars will equal other vars.
In our constructor we get the value thus:
function FormCheckBase( objForm, blnStateIsDebug, sCulture )
{
this.Form= eval('document.' + objForm);
this.Debug= new Number( blnStateIsDebug );
this.Culture= new String( sCulture );
}
with this call:
objFrm = new FormCheck( 'FormName', INFO | LOCAL | PARAM, sCulture );
Then in the instance methods of the FormCheck class, I wrap my alert boxes.
if ( this.ShowErrorAlert( this.PARAM ) ) // or whatever other value you want.
{
alert( sWhoAmI + "iArrayLength: " + iArrayLength );
alert( sWhoAmI + "blnBlank: " + blnBlank );
}
ShowErrorAlert does a bitwise "AND" to see if we have a match. We are also testing for ALL, and if that is passed originally, we are returning a true to show the alert.
FormCheckBase.prototype.ShowErrorAlert = function( iAlertBit )
{
var bitCompareResult = new Number(0);
var showMe = new Boolean(false);
bitCompareResult = (this.Debug & this.ALL);
showMe = ((bitCompareResult == this.ALL) ? true : false );
alert( showMe );
if ( showMe == true )
return showMe;
bitCompareResult = (this.Debug & iAlertBit);
showMe = ((bitCompareResult == iAlertBit) ? true : false );
return showMe;
};
I also did a couple of helper functions that would change the Debug var before I went into a method and reset it after I was done. Sometimes you might not want every single method to start showing alert boxes. So I did a SetDebugBits that sets the value of Debug and GetDebugBits that gets the current value of Debug. Call GetDebugBits first to store the current value, then call SetDebugBits to set it to whatever you want to use, and then make another call to SetDebugBits with the original value to set it back.
We mostly call our FormCheck constructor with the value of NONE, and then work on a method by method basis as we have lots of methods in the class.
How can i select immediate children of an element only. Like i have
<div class="widget">
<ul>
<li><a href="google.com">Google</a>
[code]....
Writing a sortable list function. My <li> elements contain several items (headings, paragraphs etc) and I want to add a class to the headings when they've been sorted. I have this code in my sortable init:
receive: function(event, ui) {
$(ui.item).addClass('editable');
},
This adds class="editable" to my newly-sorted <li> element - cool. What I want, though, is to add this class to the <h3> within my <li>. I tried:
receive: function(event, ui) {
$(ui.item + ' h3').addClass('editable');
},
but this just gave a syntax error.
I found that certain selectors work in all browsers except IE 8 and they need to modified. This selector pattern seem to work well in all browsers, including IE 8: jQuery("input[class='class_name'][type='text']") But this identical selector works in Firefox, Safari but not in IE 8: jQuery("input.class_name:text") In IE 8 it returns a "property not found" javascript runtime error. I don't know whether that the actual issue or if it is a side effect of some memory leak.
View 1 Replies View RelatedI'm trying to test if certain radio buttons are selected, but the name varies. My boss is considering changing the names to further isolate them breaking the script as it works now. I'm trying to figure out how to test the new case just like it works now. Here's a link to my pastebin
View 6 Replies View RelatedI am trying to assign a click event handler to any of the <a> elements in the code below:
<div data-role="content" id="picSpace" class="ui-content" role="main">
<div class="ui-grid-b" id="gamePics">
<div class="ui-block-a">
[code]....
Can I do this:
function showDiv(curEl){
hideDiv();
$(curEl).css("visibility","visible");
}
While trying to get a selector to work with ids that include square brackets, I searched the forum and found that I needed to escape the brackets with '\'. However, while this works with my fiddle: can't get the exact same selector to work within my page in either FF or Safari. I've triple-checked the id and it is correct; I know that jQuery is working on the page because changing the selector to$('.nameinput') gives the expected results. can't change the id because I'm working within an existing application; I know I could add a class to the input and use that as the selector instead. I'd prefer not to and would just like to figure out why this isn't working.
View 1 Replies View RelatedI have a page that has several embedded usercontrols with a popup reorderlist. Like
[Code]...
isthis the correct approach and if so what should the 'fld1' line look like to pull this data.
Is there a way to combine selectors with && condition. eg: $('.classname div[att=value]') Requirement is to select all div elements with class 'classname' and (&&)an attribute 'att' whose value is 'value'
View 2 Replies View RelatedWhat I'm trying to do is quite simple but as a beginner I'm getting incredibly frustrated with it. Here's my first attempt. I plan to do something a bit more fancy with the images, but I could see straight away that this wasn't the solution. Mouseover was changing the image before it had faded out and looked horrible. So, I thought I might put all the images in the same place and hide them, making them visible and bringing them to the front on mouseover of the corresponding hotspot.
[Code]...
I have the impression $('h1:after') e.g. doesn't work. How to manipulate these pseudo selectors with jQuery?
View 1 Replies View RelatedMy button when click call cal function, inside cal function I need to find parent so I can access other element, but I donot know how to pass parameter to Selectors/has(for some reason $("div :button").each(function()... no work here)
Code as below:
function cal(event) {
if (!event) event = window.event;
[code]....
I'm trying to do is simple "select all" checkbox script. The problem is, no matter what I seem to do, only first element is matched. $("input:checkbox").attr("checked", true); checks the first box only. Same with: $("input:checkbox").each(... I even tried copying this script directly from the jQuery documentation page: $("div").css("border","9px solid red"); It applies a red border to the first div on my page.. the example in the documentation applies it to all divs.
View 5 Replies View Relatedim currently creating a dropdown menu with an animation to it, my current jquery script is as follows
$(document).ready(function () {
$("ul.menu_body li:even").addClass("alt");
$('ul.menu_body, img.menu_head').hover(function () {
[code]....
Multiple selectors not working
View 8 Replies View Related