I'm trying to make a div div disappear and stay gone even when the user comes back. It doesn't seem to do what I want. When I press the button, nothing happens. Not even the value of the localStorage changes...
localStorage.done = localStorage.done || false;
$('#myButton').addEventListener('click', function() {
if (!localStorage.done) {
localStorage.done = true;
$('#myDiv').style.display = "none";
}
});
You code for the localStorage is actually working (even if its suggested to use its getter/setter methods instead of direct property access).
Your problem is this:
$('#myButton').addEventListener('click', function() {
jQuery does not know about .addEventListener you want just to call .bind()
localStorage.done = localStorage.done || false;
$('#myButton').bind('click', function() {
if (!localStorage.done) {
localStorage.done = true;
$('#myDiv').hide();
}
});
localStorage only stores strings. Thus, localStorage.done = false serializes to "false". The following code will fix your problem (see JSFiddle):
localStorage.done = localStorage.done || "false";
document.getElementById('myButton').addEventListener('click', function() {
if (localStorage.done == "false") {
localStorage.done = "true";
document.getElementById('myDiv').style.display = "none";
}
});
Note, to avoid confusion with jQuery, I used standard DOM "getElementById". You can also consider using "0" and "1" instead of "true" and "false".
While this restriction is not present in the W3 Specification, it applies to current browsers. See this post for more information. Happy coding!
Related
I am currently trying to synchronize two checkboxes on a page.
I need the checkboxes to be synchronized - to this end, I'm using a Tampermonkey userscript to pick up when one of them is clicked. However, I'm at a loss as to how to do it.
I believe they are not actually checkboxes, but ExtJS buttons that resemble checkboxes. I can't check whether they're checked with JQuery because of this: the checked value is appended to a class once the JS behind the button has run.
I have tried preventDefault and stopPropagation, but either I'm using it wrong or not understanding its' usage.
I'm not quite clever enough to just call the JS behind the box instead of an onclick event. Otherwise, that would solve my issue.
This is my code:
//Variables - "inputEl" is the actual button.
var srcFFR = "checkbox-1097";
var destFFR = "checkbox-1134";
var srcFFRb = "checkbox-1097-inputEl";
var destFFRb = "checkbox-1134-inputEl";
//This checks if they're synchronised on page load and syncs them with no user intervention.
var srcChk = document.getElementById(srcFFR).classList.contains('x-form-cb-checked');
var destChk = document.getElementById(destFFR).classList.contains('x-form-cb-checked');
if (srcChk == true || destChk == false) {
document.getElementById(destFFRb).click();
} else if (destChk == true || srcChk == false) {
document.getElementById(srcFFRb).click();
}
//This is where it listens for the click and attempts to synchronize the buttons.
$(document.getElementById(srcFFRb)).on('click', function(e) {
e.preventDefault();
if (document.getElementById(srcFFR).classList == document.getElementById(destFFR).classList) {
return false;
} else {
document.getElementById(destFFRb).click();
}
});
$(document.getElementById(destFFRb)).on('click', function(e) {
e.preventDefault();
if (document.getElementById(srcFFR).classList == document.getElementById(destFFR).classList) {
return false;
} else {
document.getElementById(srcFFRb).click();
}
});
I'm at a bit of a loss...any help would be greatly appreciated.
Figured it out - I was comparing class lists without singling out what I wanted to actually match.
My solution:
$(document.getElementById(srcFFRb)).on('click', function(){
if (document.getElementById(srcFFR).classList.contains('x-form-cb-checked')
== document.getElementById(destFFR).classList.contains('x-form-cb-checked')) {
return false;}
else {
document.getElementById(destFFRb).click();;
}});
$(document.getElementById(destFFRb)).on('click', function(){
if (document.getElementById(srcFFR).classList.contains('x-form-cb-checked')
== document.getElementById(destFFR).classList.contains('x-form-cb-checked')) {
return false;}
else {
document.getElementById(srcFFRb).click();;
}});
I am looking to effectively intercept any calls to .scrollTo and check whether the element is a certain one so that I can stop the browser from scrolling to that element. The JavaScript file that runs the .scrollTo is out of my control, hence the need to intercept it.
Here is the code I have so far:
var oScrollTo = scrollTo;
HTMLElement.prototype.scrollTo = function(){
var scrollId = this.id;
if ( scrollId !== 'id-of-element') {
console.log("yes");
$(scrollId).oScrollTo();
} else {
console.log("no");
}
};
It's basically a combination of this answer: https://stackoverflow.com/a/1740510 and this answer: https://stackoverflow.com/a/19209665
Currently, it intercepts the .scrollTo call and logs "yes" if it's not the matching element and "no" it is.
However, it should still run .scrollTo in the normal way when "yes" is logged but it does not. Any ideas on how I can make that happen would be appreciated! Thanks!
Your code is mostly right, but you are not attaching the orgScrollTo in the appropriate location to do what you are trying. Try something along these lines:
HTMLElement.prototype.orgScrollTo = HTMLElement.prototype.scrollTo;
HTMLElement.prototype.scrollTo = function(){
var scrollId = this.id;
if ( scrollId !== 'id-of-element') {
console.log("yes");
this.orgScrollTo();
} else {
console.log("no");
}
};
I am using the following script to change the HTML5 required attribute of my input elements. I am wonder whether there is a way to modify this script to make it also work in Safari browsers, since Safari does not support this attribute.
Here is the script:
$(document).ready(function() {
$_POST = array();
var elements = document.getElementsByTagName("INPUT");
for (var i = 0; i < elements.length; i++) {
elements[i].oninvalid = function(e) {
e.target.setCustomValidity("");
if (!e.target.validity.valid) {
e.target.setCustomValidity("This field can't be blank");
}
};
elements[i].oninput = function(e) {
e.target.setCustomValidity("");
};
}
})
You can also do this:
var valid = true;
$('input[required]').each(function() {
if (this.value == '') {
// Alert or message to let them know
valid = false;
return false; // stop on first error, or remove this and it'll go through all of them.
}
});
if (valid === false) {
return false;
}
Check out this page here. It contains a hacky solution that should add the desired functionality
http://www.html5rocks.com/en/tutorials/forms/constraintvalidation/#toc-safari
You're going to need to run the check yourself using an event handler on your form submission. In that handler, you run the check yourself, and if it fails, you display whatever error message and block the submission using preventDefault or return false.
An example can be found here, though as it notes, you need to be careful if you use checkValidity as your means of checking the form.
I am trying to debug this (incomplete) script, but it is behaving inconsistently. The main problem is when I click off of an item, sometimes the $(editObj).removeAttr('style'); runs and sometimes not. Through the Chrome inspector I can see that the editObj variable in each case is properly defined, but it isn't always getting its inline style attribute removed. Sometimes, and sometimes not. Cannot determine the reason.
I'm a bit out of my element with this code. Maybe something about it is obvious; Regardless I'd appreciate some ideas on why this sort of unpredictable might be occuring!
var editObj = null;
var inputType = 'text';
var input = '#textEdit';
var formId = '#form_undefined'
$(function() {
$("#textEdit").click(function(event) {
event.stopPropagation();
});
$('body').click(function(event) {
if (editObj){
//textedit contents to editobj and
if (inputType == 'text'){
$(editObj).text($("#textEdit").val());
}
$("#textEdit").removeAttr('style').hide();
$(editObj).removeAttr('style');
var previewId = $(editObj).attr('id');
var formId = previewId.replace('bzm', 'form');
$("#" + formId).val($("#textEdit").val());
//ajax modify database
editObj = null;
}
});
$(".editable").not("video, img, textarea")
.click(function(event) {
event.stopPropagation();
loadEditor($(this));
});
});
function loadEditor(element){
$("#textEdit")
.copyCSS(element)
.offset($(element).offset())
.css("display", "block")
.val($(element).text())
.select();
$(element).css("color", "transparent");
editObj = element;
}
I've had trouble in the past with .removeAttr('style'); not actually removing all the inline styles.
Use
$(editObj).attr('style', '');
instead of
$(editObj).removeAttr('style');
I dint see any code that initializes e editobj variable.. May be Im missing Anthony.. Anyways what are the chances of the edit obj being null.. Just put a log statement in the click function to always log ur editobj and see if it is null smtimes
I am using jquery to keep the focus on a text box when you click on a specific div. It works well in Internet Explorer but not in Firefox. Any suggestions?
var clickedDiv = false;
$('input').blur(function() { if (clickedDiv) { $('input').focus(); } });
$('div').mousedown(function() { clickedDiv = true; })
.mouseup(function() { clickedDiv = false });
Point to note: the focus() method on a jquery object does not actually focus it: it just cases the focus handler to be invoked! to actually focus the item, you should do this:
var clickedDiv = false;
$('input').blur( function() {
if(clickeddiv) {
$('input').each(function(){this[0].focus()});
}
}
$('div').mousedown(function() { clickedDiv = true; })
.mouseup(function() { clickedDiv = false });
Note that I've used the focus() method on native DOM objects, not jquery objects.
This is a direct (brute force) change to your exact code. However, if I understand what you are trying to do correctly, you are trying to focus an input box when a particular div is clicked when that input is in focus.
Here's my take on how you would do it:
var inFocus = false;
$('#myinput').focus(function() { inFocus = true; })
.blur(function() { inFocus = false; });
$('#mydiv').mousedown(function() {
if( inFocus )
setTimeout( function(){ $('#myinput')[0].focus(); }, 100 );
}
Point to note: I've given a timeout to focussing the input in question, so that the input can actually go out of focus in the mean time. Otherwise we would be giving it focus just before it is about to lose it. As for the decision of 100 ms, its really a fluke here.
Cheers,
jrh
EDIT in response to #Jim's comment
The first method probably did not work because it was the wrong approach to start with.
As for the second question, we should use .focus() on the native DOM object and not on the jQuery wrapper around it because the native .focus() method causes the object to actually grab focus, while the jquery method just calls the event handler associated with the focus event.
So while the jquery method calls the focus event handler, the native method actually grants focus, hence causing the handler to be invoked. It is just unfortunate nomenclature that the name of this method overlaps.
I resolved it by simply replace on blur event by document.onclick and check clicked element if not input or div
var $con = null; //the input object
var $inp = null; // the div object
function bodyClick(eleId){
if (eleId == null || ($inp!= null && $con != null && eleId != $inp.attr('id') &&
eleId != $con.attr('id'))){
$con.hide();
}
}
function hideCon() {
if(clickedDiv){
$con.hide();
}
}
function getEl(){
var ev = arguments[0] || window.event,
origEl = ev.target || ev.srcElement;
eleId = origEl.id;
bodyClick(eleId);
}
document.onclick = getEl;
hope u find it useful