Javascript – how to pass a value to a hidden field using jquery

javascriptjqueryjquery-selectors

<input type="hidden" id="name" name="hidden-new-field"/>
<form>
<input type="text" id="name-emails" />
<input id="send-btn" type="submit" class="button" value="SEND NOW" />
</form>

On button click I want to give the value of input type text to the value of hidden type

Best Answer

There are few mistakes in your form

there is no name attribute on input type text
id of Hidden element should not be name (leading confusion)
Hidden field should be inside form tag

i would prefer like this

PHP

<form>
<input type="text" id="email"  name="email"/>
<input type="hidden" id="hidden_email" name="hidden_email"/>
<input type="submit" id="send_btn"  class="button" value="SEND NOW" />
</form>

jQuery

$("form").bind('submit',function(e){
  e.preventDefault();
  var formEmail=$("input[name=email]").val();
  $("input[type=hidden][name=hidden_email]").val(formEmail);     
});

DEMO

Related Solutions

Javascript – Trigger a button click with JavaScript on the Enter key in a text box

In jQuery, the following would work:

$("#id_of_textbox").keyup(function(event) {
    if (event.keyCode === 13) {
        $("#id_of_button").click();
    }
});

$("#pw").keyup(function(event) {
    if (event.keyCode === 13) {
        $("#myButton").click();
    }
});

$("#myButton").click(function() {
  alert("Button code executed.");
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Username:<input id="username" type="text"><br>
Password:&nbsp;<input id="pw" type="password"><br>
<button id="myButton">Submit</button>

Or in plain JavaScript, the following would work:

document.getElementById("id_of_textbox")
    .addEventListener("keyup", function(event) {
    event.preventDefault();
    if (event.keyCode === 13) {
        document.getElementById("id_of_button").click();
    }
});

document.getElementById("pw")
    .addEventListener("keyup", function(event) {
    event.preventDefault();
    if (event.keyCode === 13) {
        document.getElementById("myButton").click();
    }
});

function buttonCode()
{
  alert("Button code executed.");
}

<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>

Username:<input id="username" type="text"><br>
Password:&nbsp;<input id="pw" type="password"><br>
<button id="myButton" onclick="buttonCode()">Submit</button>

Javascript – How to check if an element is hidden in jQuery

Since the question refers to a single element, this code might be more suitable:

// Checks CSS content for display:[none|block], ignores visibility:[true|false]
$(element).is(":visible");

// The same works with hidden
$(element).is(":hidden");

It is the same as twernt's suggestion, but applied to a single element; and it matches the algorithm recommended in the jQuery FAQ.

We use jQuery's is() to check the selected element with another element, selector or any jQuery object. This method traverses along the DOM elements to find a match, which satisfies the passed parameter. It will return true if there is a match, otherwise return false.