My html code is-
<tr class="selected">
<td id="participantID">XXXXX1234</td>
<input type="hidden" value="000001234" id="taxID">
<td id="fullName">Y, X</td>
</tr>
Here, I want to get hidden field value. I can not use ID of hidden field to get its value because there are multiple rows which can contain hidden field with same ID as "taxID". I want to get this value using <tr> class name.
i.e. selected.
I am using below code to get its value but it is giving me 'undefined' value.
var x = document.getElementsByClassName("selected")[0];
var y = x.getElementsByTagName("input")[0];
alert(y.value);
Alert statement shows undefined value. Am I missing something over here?
First, you cannot have multiple elements in a document with identical id values. That will have to be altered and that alone may solve your problem.
Second, your HTML is invalid. The input must be inside of a td.
Next, there is no reason to use getElementsByClassName() or getElementsByTagName() when you are looking for just one element - it's wasteful because you wind up searching the entire document when you are only interested in one item.
Also, both of those methods return "live" node lists which require re-scanning the entire document every time their results are referenced. The use cases for that are limited.
Instead use .querySelector() when you want to find just one item based on any valid CSS selector and .querySelectorAll() when you want to find a set of matching elements.
Assuming these things are corrected, you can do this:
var x = document.querySelector(".selected td input[type=hidden]");
alert(x.value);
<table>
<tr class="selected">
<td id="participantID">XXXXX1234
<input type="hidden" value="000001234" id="taxID">
</td>
<td id="fullName">Y, X</td>
</tr>
</table>
You need to have a table be the parent of a tr, then the DOM lookup will properly work. Also as noted by #Rory McCrossan you will want to wrap td tag around your input element:
var x = document.getElementsByClassName("selected")[0];
var y = x.getElementsByTagName("input")[0];
alert(y.value);
<table>
<tr class="selected">
<td id="participantID">XXXXX1234</td>
<td><input type="hidden" value="000001234" id="taxID" /></td>
<td id="fullName">Y, X</td>
</tr>
</table>
(Posted solution on behalf of the OP).
After removing ID of hidden field, it is working fine. Edited code is:
<tr class="selected">
<td id="participantID">XXXXX1234</td>
<input type="hidden" value="000001234" id="taxID">
<td id="fullName">Y, X</td>
</tr>
Related
Looking for some help on how to capture value for a specific TD cell. The challenge i'm faced with is that I cannot modify the TD cell to include classes or modify them as the table content are created dynamically by another system.
I created the fiddle below to give you an idea of what the structure of the table. As i explained above since I cannot directly modify the table structure or add extra classes to make it easier to target the TD cell I want, I am trying to Macgyver my way out of this one.
What I am trying to accomplish is this:
1) Need to capture the Reference number (Always 11 characters long and only contains numbers).
2) Put the captured reference number into a variable.
3) Concatenate the variable to the following url http://test.com/UpdateNotification.asp?OEN= (variable here) &CL=ALL&SU=ALL
4) Replace the Reference number with the URL.
So I am really having problems with the step 1 of this process. I would appreciate some help on this.
http://jsfiddle.net/W4Km8/5665/
<DIV class="sm_content">
<table border="1" width="100%">
<tr>
<td class="ms-vb2">reference numbers</td>
<td class="ms-vb2">name</td>
<td class="ms-vb2">Description</td>
<td class="ms-vb2">Incident</td>
</tr>
<tr>
<td class="ms-vb2">20150715110</td>
<td class="ms-vb2">Jhonson Doe</td>
<td class="ms-vb2">Box of cereal and other stuff</td>
<td class="ms-vb2">123</td>
</tr>
<tr>
<td class="ms-vb2">20150715111</td>
<td class="ms-vb2">Bobby Boucher</td>
<td class="ms-vb2">Box of nails and stuff</td>
<td class="ms-vb2">124</td>
</tr>
</table>
</DIV>
In the future, please make an effort before asking. That said, coders gotta code.
$('.sm_content table tr:gt(0)').each(function() {
var myId = $(this).find('td').eq(0).text();
var myUrl = 'http://test.com/UpdateNotification.asp?OEN=' + myId;
$(this).find('td').eq(0).html('' + myId + '');
});
Fiddle demo
Or, if you didn't actually want the ID linked, just do this for the last line:
$(this).find('td').eq(0).text(myUrl);
You have different ways to do it.
(function($){
$('.sm_content tr').slice(1).each(function(){
var td = $(this).find('td').first();
var tdContent = td.html();
td.html('' + tdContent + '');
});
})(jQuery);
Load the entire page into a string. I've used phpfilegetcontents but for an html only page I'd manually copy and paste the page into a text box and use document.getElementbyid('box').innerHTML to load the page's contents into a string
Find the first cell: entirepage.indexOf('td')
entirepage.slice(start from location of td plus enough characters to get past the rest of the tag, end 11 characters later)
that's your reference number
find the nth instance of 'td'
and so on.
no jquery necessary
Using jQuery I want to add some HTML to a specific <td> whose attribute matches the value I have.
For example I have a value '2015-02-01', I want to find/search the <td> which had the attribute 'data-date="2015-02-01"' and append HTML to the matched value, which in this example is <td>1</td>
<div class="fc-content-skeleton">
<table>
<thead>
<tr>
<td data-date="2015-02-01" class="fc-day-number">1</td>
<td data-date="2015-02-02" class="fc-day-number">2</td>
<td data-date="2015-02-03" class="fc-day-number">3</td>
<td data-date="2015-02-04" class="fc-day-number">4</td>
<td data-date="2015-02-05" class="fc-day-number">5</td>
<td data-date="2015-02-06" class="fc-day-number">6</td>
<td data-date="2015-02-07" class="fc-day-number">7</td>
</tr>
</thead>
</table>
</div>
I dont have any sample code as I am stuck really on how to approach this.
// This only gives me the value of the attribute
$this.parent().find('.fc-day-number').attr('data-date');
Just use attribute selector whose syntax is [attributeName[=attributeValue]]
var value = "2015-02-01";
$('[data-date="' + value + '"]').append('html here');
Note, that you can apply the above selector in find, closest and other such jQuery methods that accept a CSS selector.
Use jQuery Attribute Equals selector
then use jQuery html() to add content
or use jQuery append() to append content
here is the html() fiddle
I think is that you want :
var date = "2015-02-03";
$("td[data-date='" + date + "']").append(date);
Solution on this url : http://jsfiddle.net/g09jvfxy/1/
I'm working with a memory object where I store almost 2,000 <tr> elements. I select certain elements from this object and add them to the page according to the user.
the structure is almost like this but with more <td>s:
<tr attribute1="value" attribute2="value">
<td class="class1">something</td>
<td class="class1">something</td>
<td class="class2">something</td>
<td>
<div class="class1">
somthing
</div>
</td>
</tr>
So I select rows on certain attributes and then want to .show() or .hide() some of the <td>
I tried to use the following:
$(myObject).find("[attribute1=value]").clone().find(".class1").show();
but this statement only returns the <td>s or <div>s that satisfy the class condition.
If these rows where not in memory I could easily use a select statement which will work perfectly:
$(".class1").hide/show()
How can I achieve that in my situation
So I figured I would try to add the 'value' attribute to a TD tag because I need to store a value in a table and really kind of wanted it to be not so obvious, to my amazement, using jQuery I was able to retrieve this value.
My question is why am I able to get this value when it isn't a valid attribute and since I can, would it be safe to use.
HTML
<table id="tblTest">
<tr>
<td value="0">Value is zero</td>
</tr>
<tr>
<td value="1">Value is one</td>
</tr>
</table>
Javascript:
$('#tblTest').on('click','tr', function(){
alert($(this).children(':first').attr('value'));
});
I have created a fiddle for it http://jsfiddle.net/r2Lqp/
If I understand the question, my answer is this: you can add any attributes for personal use if they are not reserved in standards HTML.
I have a 3x3 table of td's each with id's (id='a1'...id='c3'). I'd like to be able to click on any of the 9 td's and to alert the id of that td.
Here is my Coffeescript (in the asset pipeline)
$(document).ready ->
$("td").click ->
alert(#I would like to alert the id of whichever of the 9 td cell's have been clicked on)
Here's my index.html.erb
<table>
<tbody>
<tr>
<td id='a1'>A1</td>
<td id='b1'>B1</td>
<td id='c1'>C1</td>
</tr>
<tr>
<td id='a2'>A2</td>
<td id='b2'>B2</td>
<td id='c2'>C2</td>
</tr>
<tr>
<td id='a3'>A3</td>
<td id='b3'>B3</td>
<td id='c3'>C3</td>
</tr>
</tbody>
</table>
I'm horrible at JS so any help is appreciated!
$('td').click: (e)->
alert $(#).id
Same in CoffeeScript
Also, storing user data with html element is very easy with data-* attributes, for example:
<td data-id="42"></td>
And getting this id is easy with jQuery data method like follows:
var id = $('td').data('id');
First off, using jQuery on yields better performance than attaching a click handler to each td, especially if you have lots of tds:
$('table').on 'click', 'td', (event) ->
# event.currentTarget is the td which was clicked
alert event.currentTarget.id
event.currentTarget will be a DOM element object, and so every attribute will be available as a property of the object. The other answers referring to $(this).id are wrong, since $(this) (or $(event.currentTarget)) is a jQuery object, and as such attributes are available with the attr method: $(this).attr('id').