I have a ajax function that retrieves some data as html.
How can I hide a certain element from this html string? $(data).find(".element").hide() doesn't work...
Are you sure it doesn't work? A common mistake is to assume that the string itself is modified.
Try this instead:
var $data = $(data); // create new DOM elements, and keep a reference to them
$data.find(".element").hide(); // find and hide .element
$data.appendTo('wherever'); // append the new elements
Another possibility is that the .element is at the top level of the of the HTML that was returned.
If that's the case you'd need the filter()(docs) method instead of the find()(docs) method .
var $data = $(data); // create new DOM elements, and keep a reference to them
$data.filter(".element").hide(); // filter and hide .element
$data.appendTo('wherever'); // append the new elements
Last thing to try would be wrapping the entire HTML in a <div> element, then doing a .find().
// var $data = $('<div>' + data + '</div>'); // original version
var $data = $('<div>').append( data ); // this may be better. not sure.
$data.find(".element").hide();
$data.children().appendTo('wherever');
Related
I have a string containing html elements, now I need to select some elements and remove them from the string.
In JQuery I tried the following:
html_string = "<ul><li data-delete>A<li><li>B</li></ul>";
html_clean_string = $(html_string).remove('[data-delete]').html();
This is what I expected:
"<ul><li>B</li></ul>"
But I got the same original string. So how can I use CSS selectors to remove html elements from a string?
You can do it like this:
var html_string = "<ul><li data-delete>A</li><li>B</li></ul>";
var elems = $(html_string);
elems.find('[data-delete]').remove();
var html_clean_string = elems[0].outerHTML;
You had a couple of issues:
.remove() only operates on the elements in the jQuery object, not on child object so you have to .find() the appropriate child elements before you can remove them.
Since you want the host top level HTML too, you will need the .outerHTML.
You had mistakes in your html_string.
Working jsFiddle: http://jsfiddle.net/jfriend00/x8ra6efz/
You can also save a little jQuery with more chaining like this:
var html_string = "<ul><li data-delete>A</li><li>B</li></ul>";
var html_clean_string = $(html_string).find('[data-delete]').remove().end()[0].outerHTML;
Working jsFiddle:http://jsfiddle.net/jfriend00/wmtascxf/
I have an html string that I created with a template.
This string has an html table with a bunch of rows, I'd like to manipulate this string using jquery, for example to add some classes to some rows based on logic, or other manipulation and then have jquery return a string. However, it seems that jQuery only manipulates the DOM. But I don't want to post this string into the DOM yet.
var origString = "<table><tr id='bla'>...more html inside here...</tr></table>";
//Something like
var newString = $(htmlString -> '#bla').addClass('blaClass');
// this syntax is obviously wrong, but what I mean is I'm trying
// to look inside the string not the dom
Or maybe it's better to post this string into an invisible div first and then manipulate it with jquery?
Parse it to a variable, manipulate, then append:
var origString = "<table><tr id='bla'>...";
origString = $.parseHTML(origString);
$(origString).find("tr").addClass("test");
$("body").append(origString);
Concept demo: http://jsfiddle.net/6bkUv/
Yeah, you can add a class without appending it to the dom.
var origString = "<table><tr id='bla'>...more html inside here...</tr></table>",
newString = $('<div>'+origString+'</div');
newString.find('#bla').addClass('blaClass');
console.log(newString.html());
Yes, you can definitely manipulate a string with jQuery. Here is what the following code does:
Declares a div to wrap the string in
Wraps the string in the div and does the manipulation
Finally, produces the manipulated string
No interaction with the DOM whatsoever.
var htmlString = "<table><tr id='bla'>...";
var div = $('<div/>');
div.html( htmlString ).find( '#bla' ).addClass( 'class' );
var newString = div.html();
WORKING JSFIDDLE DEMO
//OUTPUT
Original: <table><tr id='bla'><td></td></tr></table>
New: <table><tbody><tr id="bla" class="class"><td></td></tr></tbody></table>
NOTE: Please note that if your table string does not have a tbody element jQuery will include it as that makes for valid table markup.
The answers were too complicated. The answer is just a dollar sign and some parentheses:
var queryObj = $(str);
So
var str = "<table><tr>...</tr></table>"
var queryObj = $(str);
queryObj.find('tr').addClass('yoyo!');
// if you use 'find' make sure your original html string is a container
// in this case it was a 'table' container
$("body").append(queryObj);
works just fine..
I made a http request and received a htmlString, now I want to convert it to Dom object to query its elements.
Thanks for you help
You can create a container object (I've used a div here) and then assign your html string to .innerHTML and then you can query the child objects that are created.
var container = document.createElement("div");
container.innerHTML = htmlString;
The child nodes of the container object are what is created from your HTML.
using jQuery you could do something like this:
var yourStringFromServer = '<div><div id="helloWrap"></div></div>';
var a = $(yourStringFromServer); // create new jQuery instance with string
a.find('#helloWrap').html('hello'); // find the helloWrap node and set html
a.appendTo('body'); // append html to body
My jQuery question I beleive is pretty simple, which is driving me insane that I can't get it.
I have an object with a property "content", I want to be able to take that object, manipulate the property "content" with jQuery and then overwrite the value with the new value jQuery creates.
Example:
o.content = "<div><span>hello</span></div>";
$('div', o.content).addClass('test');
At this point I want o.content to be equal to <div class='test'><span>hello</span></div>
I can not for the life of me figure out the syntax. Any help is really appreciated.
This will give you a string <div class="test"><span>hello</span></div> if this is what you want:
$(o.content).addClass('test').wrap('<div>').parent().html();
Parse the html in o.content, add the class, append the parsed html to a new <div>, and get the html of the new div:
o.content = "<div><span>hello</span></div>";
var el = $(o.content).addClass('test');
o.content = $("<div>").append(el).html();
Edit: This assumes you want o.content to still contain a string, rather than a jQuery object. In that case, it's simpler:
o.content = $(o.content).addClass('test');
from the docs of the jquery function, context must be
A DOM Element, Document, or jQuery to use as context
Your context (o.content) is a string. Also, the jQuery function is not able to select the entire context, it can only select elements in that context.
Try this instead:
// make o.content a jquery element, not a string
o.content = $("<div><span>hello</span></div>");
// select on something inside the context (inside the div), not the div itself
$('span', o.content).addClass('test');
http://jsfiddle.net/JfW4Q/
I don't think you can lookup an element from a string like that.. I would rather do it like below,
var content = "<span>hello</span>";
content = $('<div/>', {class: 'test'}).html(content)
DEMO: http://jsfiddle.net/k4e5z/
You want the following
o.content = "<div><span>hello</span></div>";
// Create a jQuery object you can call addClass on
var docFragment = $(o.content);
docFragment.addClass('test');
// Since there's no outerHTML in jQuery, append it to another node
var wrapper = $('div');
docFragment.appendTo(wrapper);
// The HTML of the wrapper is the outerHTML of docFragment
console.log(wrapper.html()); // outputs <div class='test'><span>hello</span></div>
Why not do it all in one line:
var o = {};
o.content = $( "<div></div>" ) // create element
.addClass('test') // add class
.html( '<span>hello</span>' ); // append content
Fiddle: http://jsfiddle.net/kboucher/eQmar/
o.content = $("<div><span>hello</span></div>");
o.content.addClass('test');
o.content is a jQuery object in this example, as opposed to just a string. Here's a demo on jsfiddle: http://jsfiddle.net/cvbsm/1/
I'm using JavaScript to copy a specific div from a page into a new page. I need to remove the ID attributes for each table in the new page.
It seems that since I'm copying content from the first page, I can filter out the IDs from the string before it is written to the second page. Can jQuery take a variable as its 'focus'? Instead of manipulating the entire DOM, manipulate a particular string?
I have a non-working version of what I'm talking about:
var currentContent = window.open('','currentContentWindow');
var htmlToCopy = '<html><head><title></title></head><body>' + window.frames[0].document.getElementById('PageContentPane').innerHTML + '</body></html>';
$("table", htmlToCopy).removeAttr('id');
currentContent.document.open();
currentContent.document.write(htmlToCopy);
currentContent.document.close();
You need to create a jQuery object by calling $(html), manipulate it, then get the HTML back by calling html().
For example:
var currentContent = window.open('','currentContentWindow');
var htmlToCopy = '<html><head><title></title></head><body>' + window.frames[0].document.getElementById('PageContentPane').innerHTML + '</body></html>';
var newStructure = $("<div>" + htmlToCopy + "</div>");
newStructure.find("table").removeAttr('id');
currentContent.document.open();
currentContent.document.write(newElements.html());
The <div> element allows me to get its inner HTML and get the HTML you're looking for.
Who not just remove ID= as a string and forget DOM manipulation all together?
First make the string a jQuery object, then work with it:
htmlToCopy = $(htmlToCopy).find("table").removeAttr('id').end().html();