I am having trouble getting the text box nearest to my selected radio button. Here is what I have tried so far which keeps returning me 'undefined'.
HTML:
<fieldset class="capacity-field">
<legend>Capacity</legend>
<table style="margin-bottom: 20px">
<tr>
<td>
<input type="radio" name="capacity" value="raw" checked>Raw (TB):
</td>
<td>
<input type="text" name="raw-capacity" value="256" size="2"> TB
</td>
</tr>
<tr>
<td>
<input type="radio" name="capacity" value="usable">Usable (TB):
</td>
<td>
<input type="text" name="usable-capacity" value="161.28" size="2"> TB
</td>
</tr>
<tr>
<td>
<input type="radio" name="capacity" value="effective">Effective (TB):
</td>
<td>
<input type="text" name="effective-capacity" value="161.28" size="2"> TB
</td>
</tr>
</table>
JavaScript/jQuery
function cap_growth_update(toUpdate) {
var capacity = $("input[name='capacity']:checked").next("input[type='text']").val();
alert(capacity);
}
$(document).ready(function(){
cap_growth_update("T");
});
I know the value of toUpdate is arbitrary at this point, but it will be used as a selector later down the line and thus is included.
The jQuery next() function looks for a sibling element, but since these elements are separated under different td elements, you'll have to climb up the DOM:
$("input[name='capacity']:checked").closest("tr").find("input[type='text']").val();
So what it does, is to go to the closest parent, and then search for the children text input.
Try using parents() with eq() and find()
$("input[name='capacity']:checked").parents().eq(1).find("input[type='text']").val();
Note this is only a suggestion I make based on your markup, your goal could be achieved in other ways (jQuery is a rich library to traverse and manipulate DOM)
$(function() {
$("input:radio").click(function() {
if ($(this).is(":checked")) {
var value = $(this).closest("tr").find("input:text").val();
}
});
});
The code checks for a click event on a radio element then check if the element is checked, if it's checked then obtain the parent row of the radio element, find an input text inside the row an get the value of the input text the it saves the value at the var value, so you can do whatever with the value :)
Regards!
Related
I have a code like this:
<tr>
<td>
<input type="checkbox" name="ordered[]" value="xxx"></input>
</td>
<td>
<input type="checkbox" name="inStock[]" value="yyy"></input>
</td>
</tr>
The code is repeated for each result in MySQL.
Also I'm using this code:
<script>
$('input[type="checkbox"]').on('change', function() {
// uncheck sibling checkboxes (checkboxes on the same row)
$(this).siblings().prop('checked', false);
});
</script>
I need to select only one checkbox per row (per table tr). What should I change in javascript?
Thanks!
I think you need something like this
$( document ).ready(function() {
$('input[type="checkbox"]').on('change', function() {
var checkedValue = $(this).prop('checked');
// uncheck sibling checkboxes (checkboxes on the same row)
$(this).closest('tr').find('input[type="checkbox"]').each(function(){
$(this).prop('checked',false);
});
$(this).prop("checked",checkedValue);
});
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<table id="checkboxes">
<tr>
<td>
<input type="checkbox" name="inStock[]" />inStock
</td>
<td>
<input type="checkbox" name="ordered[]" value="xxx" />ordered
</td>
</tr>
<tr>
<td>
<input type="checkbox" name="inStock[]" value="yyy" />inStock
</td>
<td>
<input type="checkbox" name="ordered[]" value="xxx" />ordered
</td>
</tr>
</table>
I think what you are asking for is a RadioButton. Just give them different ids but the same name and you will be able to select just one of them.
Try applying selector based on element name:
$('input[name="ordered[]"]').on('change', function() {
Or you would probably want to add some other attribute to identify the specific element you wish to select.
Since you haven't specified which sibling, say you can grab the first element out of a jQuery object using first:
$(this).siblings().first().prop('checked', false);
You can also do
$(this).siblings(".bar").eq(0).text()
You can use the eq method to reduce the matched set of elements to one at a specific index:
If you use radio buttons and use the same name for all of them, you are only able to select one radio button at a time and the other ones gets uncheked and like our friend mentioned you need to include your <td></td> tags in <tr></tr>tags.
I have a table which contains a combination of plain text, input textboxes, selects, and spans. I need to iterate through the table row by row and pull out the value in each cell. Within my table all <tr> have a particular css class.
$(".gridBody").each(function(rowindex){
$(this).find("td").each(function(cellIndex){
var cell = $(this).first()
})
In my debugger I can see what kind of object is being returned by $(this).first() but I can't find out how to get into its attributes. I have tried using jqueries html parser to turn it back into a dom element, but instead of getting, for example, a textbox, I get something like [[html inputtextbox]]. Most of the methods that work on regular dom elements are not working for me.
If I use $(this)[0].innerText it returns the correct value when the contents of the cell are plain text, but not when they are a form of input or nested in a span element. What I would really like to be able to do is get a regular html dom element back that I can then check the type of with $.is() and then vary much logic from there.
How do I get the first child element in a table cell as an html dom element that I can manipulate with jquery like any other dom element?
var collected = $("#myTable td").find("input, textarea, span").map(function(){
return this.value || this.textContent;
}).get();
console.log( collected ); // an array holding values or text
http://jsbin.com/zewixe/2/edit?html,css,js,console,output
If you want only the immediate children than use the right > selector
(">input, >textarea, >span")
Heres how I would do it:
<table>
<tr>
<td>
<h1>Some stuff.</h1>
</td>
</tr>
<tr>
<td>
<input type="text" value="1"/>
</td>
<td>
<input type="text" value="2"/>
</td>
</tr>
<tr>
<td>
<input type="text" value="3"/>
</td>
</tr>
<tr>
<td>
<input type="text" value="4"/>
</td>
</tr>
</table>
$(function() {
function getFormData(selector){
'use strict';
var formTypes = {
text: 'text',
radio: 'radio',
select: 'select'
},
values = [];
$(selector).children().each(function(idx, childNode) {
if (childNode.getAttribute('type') && formTypes[childNode.getAttribute('type')]) values.push(childNode.value);
});
return values;
}
alert(
getFormData('table tr td.someClass')
);
})();
http://codepen.io/nicholasabrams/pen/RaKGjZ
I want get the value of next immediate input value by class. Here is my code:
<table>
<tr>
<td>
<input class='name' value='demo1'/>
</td>
<td>
<input class='age' value='23'/>
</td>
<td>
<input class='name' value='demo2'/>
</td>
<td>
<input class='age' value='24'/>
</td>
</tr>
</table>
and JS file
$('body').on('blur','.name',function(){
alert($(this).parent().next('.age').val());
});
I want the value of age next to name? What have I missed?
My JSfiddle link is: http://jsfiddle.net/mvkc95f8/
Thank you
The .age input field is within the sibling td element, so you need to use .next() to get that td, then .find('.age') to retrieve the input. Try this:
alert($(this).parent().next().find('.age').val());
Updated fiddle
Using jquery, i would like to find a value in an input field just above the current table row, for example if tr id="two" is active, i can find the value of input id="x" at tr id="one" and if tr id="three" is active, i can find the value of input id="y" at tr id="two", Suggestions!
<table>
<tr id="one">
<input type="text" id="x"/>
</tr>
<tr id="two">
<input type="text" id="y"/>
</tr>
<tr id="three">
<input type="text" id="z"/>
</tr>
</table>
You can use prev(), find() and val():
$('tr.active').prev().find('input').val()
//first part can depend upon how/when you want to find it.
$('tr.active').prev().find('input[type="text"]').val()
If you want to avoid jQuery..
var x = document.querySelector("tr.active");
var value = x.parentNode.firstChild.value;
$('tr.active').prev().children()[0].val()
Let me explain:
I have a table form and some fields are required and I am trying to create custom validation.
example:
<table>
<tr>
<td class="required">Description</td>
<td>
<input id="input1" />
</td>
<td>Phone</td>
<td>
<input id="input2" />
</td>
</tr>
<tr>
<td class="required">Location</td>
<td>
<select id="select1"/>
</td>
<td>Email</td>
<td>
<input id="input3"/>
</td>
</tr>
</table>
What I wanna do is find all elements with class required
which is pretty easy using:
var requiredElements = document.querySelectorAll(".required");
And then I want to find their closest control element and check if it's value is empty. The problem is I don't know if it's gonna be input or select. I was thinking of using the .closest() function but it could lead to unwanted results if two different inputs are equally close to a required (like in the example above).
Any help would be much appreciated.
You can select a control regardless of type with jQuery by using any one of a number of selectors and combining it with one or more additional selectors.
In the code snippet you provide, the controls you want to select (input1 and select1) are child elements of a table cell element that is a sibling of the cell with the class "required", so we can build a selection thus:
$(".required + td").child
which breaks down as:
Find the elements with the "required" class applied to them.
This will give us the 2 table cells:
<td class="required">Description</td>
and
<td class="required">Location</td>
For each element returned by 1. use the "next adjacent" selector + with td to get the next table cell:
<td><input id="input1" /></td>
and
<td><select id="select1" /></td>
For each element returned by 2. get the child element:
<input id="input1" />
and
<select id="select1" />
There is also a jsFiddle to illustrate actions on the targets (change border to dark red).
Edit
This works because the layout in your snippet consistently places the elements you want to target in the same position relative to the element with your selection criteria. You must have some consistent way of finding elements that are not marked with a class/id otherwise you can't achieve your objective.
Although I like Raad's answer I'd like to post this answer to say what I did to solve my problem.
First of all I added a custom attribute labelFor to every label td with value equal to the id of it's corresponding input as follows:
<table>
<tr>
<td class="required" labelFor="input1">Description</td>
<td>
<input id="input1" />
</td>
<td labelFor="input2">Phone</td>
<td>
<input id="input2" />
</td>
</tr>
<tr>
<td class="required" labelFor="select1">Location</td>
<td>
<select id="select1"/>
</td>
<td labelFor="input3">Email</td>
<td>
<input id="input3"/>
</td>
</tr>
</table>
Then I used the following Validation function:
function validateForm () {
var self = this;
var validationPassed = true;
//First I will gather every .required element in an Array
var requiredTags = document.querySelectorAll(".required");
//Then I will loop through the array
for (var i = 0; i < requiredTags.length; i++) {
//Get value of attribute "labelFor" which would be the controlId that this label refers to
var controlId = $(requiredTags[i]).attr("labelFor");
//Then I use this to check if that control's value is empty.
if ($("#" + controlId).val() == ('' || null)) {
validationPassed = false;
}
}
if (!validationPassed) {
alert("Please fill all the required fields");
}
return validationPassed;
}
This way I check if all required fields are not empty and return true, or return false and an alert to warn user.
I find that the problem Raad described in his Edit is the main reason why this approach could be more useful. You don't have to worry if your input element is always in the same position relatively to your label td element.