How to get hash from document url - javascript

if I use:
jQuery(document).ready(function() {
console.log($(this));
});
then in console I have object:
[Document mypage.html#weather]
how can i get for this last ID? In this example this is #weather. I would like use alert #weather in selector, for example $(data_from_console + '.add').val();

Do you want to get the last element that has an ID attribute?
If so:
$(document).ready(function () {
console.log($('body *[id]').eq(-1));
});
EDIT
On a closer look, are you looking for the hash tag? ie. if your URL is mypage.html#weather you want the #weather ?
In that case try:
$(document).ready(function () {
console.log(document.location.hash);
});

You can use last() method. Try this:
$(document).ready(function() {
$('body *').each(function() { //selects all elements in body which got id
var lastEle = $(this).last(); //selects last one of them
console.log(lastEle.attr('id'));//returns it's id to console log
});
});

Related

Removing an href value, if it exists using jquery

What would the best way to remove an href that has a specific value using jquery if it is found in the DOM.
$(document).ready(function () {
$('a').each(function () {
var hrefValue = $(this).attr("href")
if (hrefValue == '/remove/thehrefvalue?when=now') {
//remove only a href containing this specific value
}
});
});
Kind regards
Instead of iterating through every a, you can iterate through only as which have that particular href attribute by altering the selector string:
$('a[href="/remove/thehrefvalue?when=now"]').remove();
$('a[href="/remove/thehrefvalue?when=now"]').remove();
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
now
now
notnow
now
(Not entirely sure what you're looking for. If you wanted to remove the <a>s, use the code above - if you wanted to remove the attributes but leave the <a>s alone, use removeAttr('href') instead of .remove())
$(document).ready(function () {
$('a').each(function () {
if ($(this).attr("href") == '/remove/thehrefvalue?when=now') {
$(this).removeAttr("href");
}
});
});

Get ID of Element Being Clicked and Pass as Parameter?

How does one, through jQuery, get the ID of an element that is being clicked on and then pass it as a parameter into a function? Example jQuery code below.
jQuery(document).ready(function() {
var id = this_id;
jQuery(".lightbox a").click({param: id}, functionName);
});
May I note that the "param" parameter is integral to the structure of the function.
Apologies all, I am no Javascript master by any means.
I'm guessing the point is to pass event data to a function that expects that, as ,click() supports the .click( [eventData ], handler(eventObject) ) syntax, and if so, you have to iterate the collection yourself:
jQuery(document).ready(function($) {
$(".lightbox a").each(function() {
$(this).click({param: this.id}, functionName);
});
});
EDIT:
You could do this with on() as well:
jQuery(document).ready(function($) {
$(".lightbox a").each(function() {
$(this).on('click', {param: this.id}, functionName);
});
});
FIDDLE
Within the click handler, you can access the element ID with this.id or $(this).attr('id'):
jQuery(document).ready(function() {
jQuery(".lightbox a").click(function(){
functionName(this.id);
});
});
You can use this.id inside a click event, example:
jQuery(".lightbox a").click(function() {
var id = this.id;
//pass to a function
testFunction(id);
});
function testFunction(param) {
console.log(param);
}
It's easy just access to the this element to get the clicked element, then extract its id and save it into a variable like this:
jQuery(".lightbox a").click(function(){
var id = jQuery(this).attr("id");
callFunction(id);
});
http://jsfiddle.net/pArW6/
jQuery(document).ready(function() {
jQuery(".lightbox a").click(functionName);
});
function functionName()
{
alert(this.id);
}
You can you Use $(this).att("id").
$(".lightbox a").click(function() {
var ID=$(this).att("id");
//pass to a function
TestFunction(ID);
});
function TestFunction(P) {
console.log(P);
}
Live example
http://jsbin.com/enobop/1/edit
You can do this:
jQuery(document).ready(function () {
jQuery(".lightbox a").click(function (e) {
// Cancel the default action (navigation) of the click.
e.preventDefault();
// 'this' here refers to the link being clicked in the current scope
// you can check the console for the id for debug purpose
console.log(this.id);
// pass the id to the function
functionName(this.id);
});
});
Another way is to use the event parameter that gets passed to the callback function.
jQuery(".lightbox a").click(function(ev) {
console.log(ev.target.id);
}
Of course it's a mix of jQuery and pure JS.
Usually you have a function for an event declared with
function(event)
and the event has a target and the id of the target is, what you want. So
$("SomeElement").on("click", function(e){ callanotherFunction(e.target.id) })
does, what you wanted
You can use this.id or $(this).attr("id");, but you might want to get a reference to $(this) - wrapped or not - immediately and work from a variable if you do much of anything else in there.

Reading the IMG within an A on click jQuery

I'm trying to adapt my script to read the alt attribute of an img within an a.
For some reason, this isn't work:
$("#thumbs a").click(function(event) {
event.preventDefault();
var title = $(this + " img").attr("alt");
alert(title);
});
It returns a value of [object Object].
I'd appreciate some help, thanks.
You need to change your selector to use the second parameter, which is the context in which to evaluate the selector.
$("#thumbs a").click(function(event) {
var title = $('img', $(this)).attr("alt");
alert(title);
});
Working example: http://jsfiddle.net/q4Bsq/2/
$(this + " img") will not select anything so the alert which you are seeing is just an empty jQuery object. You should using $(this).find("img") which will select all the img elements within this i.e the anchor element in this case.
$("#thumbs a").click(function(event) {
event.preventDefault();
var title = $(this).find("img").attr("alt");
alert(title);
});

using html() to get changed content

I have a div that I need to grab the HTML contents of (so naturally I use html())...
However, they are text fields. Whenever I grab the contents of the div (that contains the text fields), it grabs the initial HTML and not any data changed by the end user...
Here is JS bin version..change the input field, run the function and you see that it will only take the initial value of the field...
Any way around this?
http://jsbin.com/oleni3/edit
http://jsbin.com/oleni3/5/edit
Try this out ^
The code:
$(document).ready(function() {
$('div#top input').change(function() {
$(this).attr('value', $(this).val());
});
$('#click').click(function() {
var _curHtml = $("div#top").html();
$("div#bottom").html(_curHtml);
});
});
Your getting the HTML of the div. You want to get the value of the input box:
$(document).ready(function() {
$('#click').click(function() {
var _curHtml = $("#data").val();
$("div#bottom").html(_curHtml);
});
});
No way to do it with html(). You'll have to get the value of each input using val(). You can use
$("input").each(function() {
doSomething($(this).val());
}
if it make life easier.
$(document).ready(function() {
$('#click').click(function() {
var _curHtml = $("#data").val();
$("div#bottom").html(_curHtml);
});
});
The easiest hack would be like this:
$("div#bottom input").val($("div#top input").val());
Get the value of the updated input and set that to the clone.
Updated link:
http://jsbin.com/oleni3/3/edit
$(document).ready(function() {
$('#data').change(function() {
$(this).attr('value', $(this).val());
})
$('#click').click(function() {
var _curHtml = $("div#top").html();
$("div#bottom").html(_curHtml);
});
});
This works.. here's the link http://jsbin.com/oleni3/2/edit
UPDATE: If you have many inputs inside the div, you can use this http://jsbin.com/oleni3/6/edit

Javascript , jQuery - what have I done wrong?

$(document).ready(function () {
$("href").attr('href', 'title');
});
$('a[href$=.jpg]').each(function () {
var imageSrc = $(this).attr('href');
var img = $('<img />').attr('src', imageSrc).css('max-width', '300px').css('max-height', '200px').css('marginBottom', '10px').css('marginTop', '10px').attr('rel', 'lightbox');
$(this).replaceWith(img);
});
});
This is the jQuery code I have at the moment, which I want to change all links' href to the same as their title, before then embedding them in the page. Yet with the changing href to title bit in the code, it stops working. I'm new to Javascript so am definitely doing something wrong, just not sure what yet! Any help much appreciated!
Thank you guys
EDIT
This is the html that I want to change:
<p class="entry-content">Some interesting contenthttp://example.com/index.php/attachment/11</p>
You are changing it wrong, you are trying to select href elements instead of a.
This fix should do it:
$("a[title]").each(function() {
$(this).attr('href',$(this).attr('title'));
});
It will select all a elements with title and set the href with this value.
Here's a much more efficient way.
Since you're just replacing the <a> elements, there's really no need to change its href. Just select the <a> elements that end with jpg/jpeg, and use that attribute directly.
Example: http://jsfiddle.net/5ZBVf/4/
$(document).ready(function() {
$("a[title$=.jpg],[title$=.jpeg]").replaceWith(function() {
return $('<img />', {src:this.title, rel:'lightbox'})
.css({maxWidth: 300,maxHeight: 200,marginBottom: 10,marginTop: 10});
});
});​
Your .each() is outside the .ready() function.
You can accomplish the href change easily like this:
$(document).ready(function () {
$("a").attr('href', function() { return this.title; });
});
The .attr() method will accept a function where the return value is the new value of (in this case) href.
So the whole thing could look like this:
Example: http://jsfiddle.net/5ZBVf/3/
$(document).ready(function() {
$("a[title]").attr('href', function() { return this.title; })
.filter('[href$=.jpg],[href$=.jpeg]')
.replaceWith(function() {
return $('<img />', {src:this.href, rel:'lightbox'})
.css({maxWidth: 300,maxHeight: 200,marginBottom: 10,marginTop: 10});
});
});
This line:
$("href").attr('href','title');
Is finding all href elements and replacing their href attr with the string 'title'. Since there is no such thing as an href element, Try this instead:
// for every anchor element on the page, replace it's href attribute with it's title attribute
$('a').each(function() {
$(this).attr('href', $(this).attr('title');
});
Check this out: http://jsfiddle.net/TbMzD/ Seems to do what you want.
Note: $(document).ready() is commented because of jsfiddle, you actually need it in your code.
Try:
$("a").each(function () {
var $this = $(this);
$this.attr('href', $this.attr('title'));
});

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