[javascript] How do I change the text of a span element using JavaScript?

If I have a span, say:

<span id="myspan"> hereismytext </span>

How do I use JavaScript to change "hereismytext" to "newtext"?

I use Jquery and none of the above helped, I don't know why but this worked:

 $("#span_id").text("new_value");

In addition to the pure javascript answers above, You can use jQuery text method as following:

$('#myspan').text('newtext');

If you need to extend the answer to get/change html content of a span or div elements, you can do this:

$('#mydiv').html('<strong>new text</strong>');

References:

.text(): http://api.jquery.com/text/

.html(): http://api.jquery.com/html/

For this span

<span id="name">sdfsdf</span>

You can go like this :-

$("name").firstChild.nodeValue = "Hello" + "World";

For some reason, it seems that using "text" attribute is the way to go with most browsers. It worked for me

$("#span_id").text("text value to assign");

Here's another way:

var myspan = document.getElementById('myspan');

if (myspan.innerText) {
    myspan.innerText = "newtext";
}
else
if (myspan.textContent) {
        myspan.textContent = "newtext";   
}

The innerText property will be detected by Safari, Google Chrome and MSIE. For Firefox, the standard way of doing things was to use textContent but since version 45 it too has an innerText property, as someone kindly apprised me recently. This solution tests to see if a browser supports either of these properties and if so, assigns the "newtext".

Live demo: here

Using innerHTML is SO NOT RECOMMENDED. Instead, you should create a textNode. This way, you are "binding" your text and you are not, at least in this case, vulnerable to an XSS attack.

document.getElementById("myspan").innerHTML = "sometext"; //INSECURE!!

The right way:

span = document.getElementById("myspan");
txt = document.createTextNode("your cool text");
span.appendChild(txt);

For more information about this vulnerability: Cross Site Scripting (XSS) - OWASP

Edited nov 4th 2017:

Modified third line of code according to @mumush suggestion: "use appendChild(); instead".
Btw, according to @Jimbo Jonny I think everything should be treated as user input by applying Security by layers principle. That way you won't encounter any surprises.

document.getElementById("myspan").textContent="newtext";

this will select dom-node with id myspan and change it text content to new text

(function ($) {
    $(document).ready(function(){
    $("#myspan").text("This is span");
  });
}(jQuery));

<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<span id="myspan"> hereismytext </span>

user text() to change span text.

I used this one document.querySelector('ElementClass').innerText = 'newtext';

Appears to work with span, texts within classes/buttons

You can do

 document.querySelector("[Span]").textContent = "content_to_display"; 

document.getElementById('myspan').innerHTML = 'newtext';

EDIT: This was written in 2014. You probably don't care about IE8 anymore and can forget about using innerText. Just use textContent and be done with it, hooray.

If you are the one supplying the text and no part of the text is supplied by the user (or some other source that you don't control), then setting innerHTML might be acceptable:

// * Fine for hardcoded text strings like this one or strings you otherwise 
//   control.
// * Not OK for user-supplied input or strings you don't control unless
//   you know what you are doing and have sanitized the string first.
document.getElementById('myspan').innerHTML = 'newtext';

However, as others note, if you are not the source for any part of the text string, using innerHTML can subject you to content injection attacks like XSS if you're not careful to properly sanitize the text first.

If you are using input from the user, here is one way to do it securely while also maintaining cross-browser compatibility:

var span = document.getElementById('myspan');
span.innerText = span.textContent = 'newtext';

Firefox doesn't support innerText and IE8 doesn't support textContent so you need to use both if you want to maintain cross-browser compatibility.

And if you want to avoid reflows (caused by innerText) where possible:

var span = document.getElementById('myspan');
if ('textContent' in span) {
    span.textContent = 'newtext';
} else {
    span.innerText = 'newtext';
}

Like in other answer, innerHTML and innerText are not recommended, it's better use textContent. This attribute is well supported, you can check it this: http://caniuse.com/#search=textContent

You may also use the querySelector() method, assuming the 'myspan' id is unique as the method returns the first element with the specified selector:

document.querySelector('#myspan').textContent = 'newtext';

developer.mozilla