Does the .add() method allow selecting multiple objects in one go instead of adding one at a time?
one.add(two).add(three).add(four).on("click", function() { });
The following variables are set in the way they do because each carries a different function.
var one = $("#1");
var two = $("#2");
var three = $("#3");
var four = $("#4");
But what if I want to add an extra function that applies to all of these elements? Do I have to add them one by one?
I know you can select them all using $("#1,#2,#3,#4"), but I just want to make use of the above variables.
I'd prefer this array approach, purely for readability...
$([one, two, three, four]).each(function() {
// your function here
});
You cannot add multiple objects in one go, for example:
var groupThree = one.add(three, five); // will not work as expected
You could cache the added objects so that you only have to do the add one time - http://jsfiddle.net/X5432/
var one = $("#1");
var two = $("#2");
var three = $("#3");
var four = $("#4");
var five = $("#5");
var groupOne = one.add(two).add(three).add(four);
var groupTwo = groupOne.add(five);
$('#first').click(function(e){
e.preventDefault();
groupOne.css({'background': '#00FF00'});
});
$('#second').click(function(e){
e.preventDefault();
groupTwo.css({'background': '#FF0000'});
});
But I like the array method better, this is just a different way of thinking about it.
You could put them into an array like this
var k = [one,two,three,four]
$.each(k,function(){
$(this).click(function(){
//Function here
});
});
Related
I have build an dynamic ajax function that saves data-xxx-values of elements to process the data. However I want to shorten this code which takes values depending on the ajax-request I want to process:
var data_form = $(element).attr('data-form');
var data_index = $(element).attr('data-index');
var data_hide_error = $(element).data('hide-error');
var data_disable_blur = $(element).data('disable-blur');
var data_hide_success = $(element).data('hide-success');
in a way that I only have one or two lines of code where I check which data-values are given in the element and if there is one data-value, I want to create a variable with that exact name.
For example: I click on this anchor send and my function would create the variables var data_index = 1; and var data_form = '#registerForm'; automatically.
How could I achieve this?
Perhaps you meant this: Using .data() will return all data-attributes in one object to use in the function that you call
$(function() {
$("a").on("click",function(e) {
e.preventDefault();
console.log($(this).data())
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script>
send
I am trying to make jQuery update the values in the selector after they are passed. What I mean is this.
I am passing the selector like this.
var items = ['.item-1','.item-2'...];
$(items[1]).click(function(){....});
And then in the end of the function I change the order of the items array.
var items = ['.item-1','.item-2'...];
$(items[1]).click(function(){
// ... function
items = ['.item-3', '.item-1' ...];
});
Now the problem is that the function is binded to the inital items[1], so my changing of the array does not really matter. I am pretty sure there should be a not too complicated solution, so can you please point me in the right direction ?
You could one method in combination with a recursion schema
var items = ['.item-1','.item-2','.item-3'];
$(items[1]).one('click', clickHandler);
function clickHandler() {
items = //re-sort items;
$(items[1]).one('click', clickHandler);
}
Take into account that arrays index is zero based so you're using the second item and not the first when doing items[1].
I think you have to use a recursive method.
It could be:
var items = ['.item-1','.item-2'];
function redefine(){
$(items[1]).click(function(){
items = ['.item-3', '.item-1'];
$(this).unbind("click");
redefine();
});
}
redefine()
I'm trying to create an array in Javascript with a size that is equivalent to the number of times a certain class is found in the DOM, and then iterate through it to grab the text from an input field present in that class. I can easily do this like so:
var count = 0;
$('.className').each(function() {
count++;
});
var classes = new Array(count);
count = 0;
$('.className input[type=text]').each(function() {
classes[count++] = $(this).val();
});
This looks like a lot of code for what seems to be a relatively simple task. Is there a more efficient or less lengthy way of doing this?
Thanks
It looks like you want this :
var classes = $('.className input[type=text]').map(function(){
return this.value
}).get();
But it's a guess : it's not clear why you start by counting all elements of the class and then iterate on the inputs.
You can construct an array of elements directly from your selector via the makeArray function, then transform the result using a map.
var classes = $.makeArray($('.className input[type=text]')).map(function() {
return $(this).val();
});
Use jQuery's map function, then get if you need a pure array:
var values = $('.className input[type=text]').map(function() {
return $(this).val();
}).get();
each passes the index, so you don't need to do it yourself:
var classes = [];
$('.className input[type=text]').each(function(index, value) {
classes[index] = $(this).val();
});
Arrays are dynamic and therefore don't need to be initialized. Create a new array, loop through the inputs and push the values to the new array:
var classes = [];
$('.className input[type=text]').each(function(idx, elem) {
classes.push($(elem).val());
});
Hi all i am trying to change the html of an object from an array of htmls. But i am having problem iterating properly. I managed to make it work once
EDIT
After a few complains about the clarity of my question I will rephrase it. I have a div panel called .trpanel and a button called #trigger2 (it is a next button). Then I have a series of divs with texts that contain translations. I want when I press the button (called next) to cycle through the translations one by one on the trpanel.
var ltranslation = [];
ltranslation[0] = $("#translation-en-1").html();
ltranslation[1] = $("#translation-ur-en").html();
ltranslation[2] = $("#translation-fr-en").html();
ltranslation[3] = $("#translation-it-en").html();
ltranslation[4] = $("#translation-sp-en").html();
ltranslation[5] = $("#translation-po-en").html();
ltranslation[6] = $("#translation-fr-en").html();
ltranslation[7] = $("#translation-de-en").html();
var l= ltranslation;
$("#trigger2").off('click').on('click',function(){
for (var i = 0; i <= ltranslation.length; i++){
if (i==7){i=0;}
$(".trpanel").html.ltranslation[i]; or ???//replace().ltranslation[]+i??? the code throws errors
}
});
I am quite new to Javascript and i am getting a bit confused with the types of objects and arrays and loops. I managed once to add the htmls but without replacing them ... so they all came one after the other. The i tried to change the code and it hasn't worked since. Any help will be greatly appreciated.
A lot of guessing, but seems like you are trying to do this :
var trans = $('[id^="translation-"]'),
idx = 0;
$("#trigger2").on('click',function(){
$(".trpanel").html( trans.eq(idx).html() );
idx = idx > 6 ? 0 : idx+1;
});
FIDDLE
I think you are trying to do this:
if (i == 7) {
i = 0; // I don't really know why you are doing this, but it will reset the loop
}
$(".trpanel").html(ltranslation[i]); //I'm passing ltranslation[i] to the html method. Instead of .html.ltranslation[i].
}
Also, without seeing any html, I'm not sure but I think you may want to iterate over .trpanel ?
Something like:
$(".trpanel").eq(i).html(ltranslation[i]);
Another thing (so you can make your code clearer I think). You can abstract the array population in a function, like this:
var ltranslation = [];
var languages = ["en-1", "ur-en", "fr-en", "it-en", "sp-en", "po-en", "fr-en", "de-en"];
$.each(languages, function(index) {
ltranslation[index] = $("#translation-" + this).html();
});
// Then you can use ltranslation
If you want to flip through several translations I would implement it that way:
var translations=["hej","hello", "hallo","hoy"];
var showTranslation=function(){
var current=0;
var len=translations.length;
return function(){
var direction=1;
if (current>=len) current=0;
$("#text").text(translations[current]);
current+=direction;
}
}();
$("#butt").on("click", showTranslation);
Fiddle: http://jsfiddle.net/Xr9fz/
Further: You should give your translations a class, so you could easily grab all of them with a single line:
$(".translation).each(function(index,value){ ltranslation.push(value); })
From the question : I managed once to add the htmls but without replacing them -
I think you want to add all of these items into $(".trpanel"). First, dont take the HTML of each element, clone the element itself :
//method ripped from Nico's answer.
var ltranslation = [];
var languages = ["en-1", "ur-en", "fr-en", "it-en", "sp-en", "po-en", "fr-en", "de-en"];
$.each(languages, function(index) {
ltranslation[index] = $("#translation-" + this).clone();
});
Then you could append everything into the container, so add the htmls but without replacing them. append takes in an array without replacing the previous html.
$("#trigger2").off('click').on('click',function() {
$(".trpanel").append(ltranslation);
});
I don't know what exactly you're tring to do, but I've put comments in your code to help you better understand what your code is doing. The net effect of your code is this (which I doubt you want) :
$("#trigger2").off('click').on('click',function(){
$(".trpanel").html(ltranslation[7]);
});
This is your code with some comments and minor changes
var ltranslation = [];
ltranslation[0] = $("#translation-en-1").html();
ltranslation[1] = $("#translation-ur-en").html();
ltranslation[2] = $("#translation-fr-en").html();
ltranslation[3] = $("#translation-it-en").html();
ltranslation[4] = $("#translation-sp-en").html();
ltranslation[5] = $("#translation-po-en").html();
ltranslation[6] = $("#translation-fr-en").html();
ltranslation[7] = $("#translation-de-en").html();
var l= ltranslation;
$("#trigger2").off('click').on('click',function(){
for (var i = 0; i < ltranslation.length; i++){
//if (i==7){i=0;} <-- This will cause an infinite loop won't it? are you trying to reset i? i will reset next time loop is called,
$(".trpanel").html(ltranslation[i]); //<-- this will overwrite elements with class .trpanel ltranslation.length times...
///you'll see only the value of translation[7] in the end
}
});
EDIT
To do what you want to do based on your comments, try this:
var ltranslation = [];
ltranslation[0] = $("#translation-en-1").html();
ltranslation[1] = $("#translation-ur-en").html();
ltranslation[2] = $("#translation-fr-en").html();
ltranslation[3] = $("#translation-it-en").html();
ltranslation[4] = $("#translation-sp-en").html();
ltranslation[5] = $("#translation-po-en").html();
ltranslation[6] = $("#translation-fr-en").html();
ltranslation[7] = $("#translation-de-en").html();
var counter = 0;//a global counter variable
$("#trigger2").click(function(){ //eeverytime button is clicked do this
$(".trpanel").html(ltranslation[counter]); //set the html to an element of array
counter++; //increment counter
if(counter==ltranslation.length) //reset the counter if its bigger than array len
counter=0;
});
I'm trying to turn more into a hyperlink, but it's like it totally ignores the last wrap.
$j('#sub > div[id^="post-"]').each(function() {
var sid=this.id.match(/^post-([0-9]+)$/);
var sfimg = $j(this).find("img");
var sfhh = $j(this).find("h2");
var sfpt = $j(this).find("p:not(:has(img)):eq(0)");
var more = 'more';
$j(this).html(sfimg);
$j(sfimg).wrap($j('<a>').attr('href', '/blog/?p='+sid[1]));
$j(this).append(sfhh).append(sfpt);
$j(sfpt).wrap($j('<div>').attr('class', 'sfentry'));
$j(this).append('<div class="morelink">'+more+'</div>');
$j(more).wrap($j('<a>').attr('href', '/blog/?p='+sid[1]));
});
You over-using the jquery function ($j(), in your case) and your doing things in the wrong order. Also, there may be cases (possibly) that $(this).find('img'), for instance, might return more than one element... Not sure of your scenario, though.
Try this (may not be perfect, but it should lean you in the right direction):
$j('#sub > div[id^="post-"]').each(function() {
var sid = this.id.match(/^post-([0-9]+)$/);
var sfimg = $j(this).find("img");
var sfhh = $j(this).find("h2");
var sfpt = $j(this).find("p:not(:has(img)):eq(0)");
var more = 'more';
sfimg.wrap($j('<a>').attr('href', '/blog/?p='+sid[1]));
$j(this).html(sfimg);
sfpt.wrap($j('<div>').attr('class', 'sfentry'));
// You do realize what you have will append the paragraph to your h2 tag, right?
// I think you want:
/*
$j(this).append(sfhh).end().append(sfpt);
*/
$j(this).append(sfhh).append(sfpt);
$j(this).append('<div class="morelink">'+more+'</div>');
$j('.morelink',this).wrap($j('<a>').attr('href', '/blog/?p='+sid[1]));
});
There were all sorts of crazy things going on in that code. Remember that you need to modify the objects before appending them to another object (unless you have some unique way of identifying them after the fact, i.e. IDs).
Good luck.
Why do you expect $j(more) to match anything?