How can I select an element by name with jQuery?

How can I select an element by name with jQuery?

Have a table column I’m trying to expand and hide:
jQuery seems to hide the td elements when I select it by class but not by element’s name.
For example, why does:
$(“.bold”).hide(); // selecting by class works
$(“tcol1”).hide(); // select by element name does not work

Note the HTML below, the second column has the same name for all rows. How could I create this collection using the name attribute?

data1 data2 data1 data2 data1 data2

Solutions/Answers:

Solution 1:

You can use the attribute selector:

$('td[name=tcol1]') // matches exactly 'tcol1'

$('td[name^=tcol]') // matches those that begin with 'tcol'

$('td[name$=tcol]') // matches those that end with 'tcol'

$('td[name*=tcol]') // matches those that contain 'tcol'

Solution 2:

Any attribute can be selected using [attribute_name=value] way.
See the sample here:

var value = $("[name='nameofobject']");

Solution 3:

If you have something like:

<input type="checkbox" name="mycheckbox" value="11" checked="">
<input type="checkbox" name="mycheckbox" value="12">

You can read all like this:

jQuery("input[name='mycheckbox']").each(function() {
    console.log( this.value + ":" + this.checked );
});

The snippet:

jQuery("input[name='mycheckbox']").each(function() {
  console.log( this.value + ":" + this.checked );
});
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<input type="checkbox" name="mycheckbox" value="11" checked="">
<input type="checkbox" name="mycheckbox" value="12">

Solution 4:

You could get the array of elements by name the old fashioned way and pass that array to jQuery.

function toggleByName() {
  var arrChkBox = document.getElementsByName("chName");
  $(arrChkBox).toggle();
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>
  <head>
    <title>sandBox</title>
  </head>
  <body>
    <input type="radio" name="chName"/><br />
    <input type="radio" name="chName"/><br />
    <input type="radio" name="chName"/><br />
    <input type="radio" name="chName"/><br />
    <input type="button" onclick="toggleByName();" value="toggle"/>
  </body>
</html>

note: the only time you would have a reason to use the “name” attribute should be for checkbox or radio inputs.

Or you could just add another class to the elements for selection.(This is what I would do)

function toggleByClass(bolShow) {
  if (bolShow) {
    $(".rowToToggle").show();
  } else {
    $(".rowToToggle").hide();
  }
}
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<html>
  <head>
    <title>sandBox</title>
  </head>
  <body>
    <table>
      <tr>
        <td>data1</td>
        <td class="bold rowToToggle">data2</td>
      </tr>
      <tr>
        <td>data1</td>
        <td class="bold rowToToggle">data2</td>
      </tr>
      <tr>
        <td>data1</td>
        <td class="bold rowToToggle">data2</td>
      </tr>
    </table>
    <input type="button" onclick="toggleByClass(true);" value="show"/>
    <input type="button" onclick="toggleByClass(false);" value="hide"/>
  </body>
</html>

Solution 5:

You can get the name value from an input field using name element in jQuery by:

var firstname = jQuery("#form1 input[name=firstname]").val(); //Returns ABCD
var lastname = jQuery("#form1 input[name=lastname]").val(); //Returns XYZ 
console.log(firstname);
console.log(lastname);
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>
<form name="form1" id="form1">
  <input type="text" name="firstname" value="ABCD"/>
  <input type="text" name="lastname" value="XYZ"/>
</form>

Solution 6:

Frameworks usually use bracket names in forms, like:

<input name=user[first_name] />

They can be accessed by:

// in JS:
this.querySelectorAll('[name="user[first_name]"]')

// in jQuery:
$('[name="user[first_name]"]')

// or by mask with escaped quotes:
this.querySelectorAll("[name*=\"[first_name]\"]")