Text box dynamically change for the inputted text

[Alison]

Hello,

Is there a way to make a text box dynamically change for the inputted text?

[vinebath]

Hello Alison, 

If you have this element in the HTML: <input type="text" id="txtbox" />

you can apply the following JS code instead:

var txtBox = document.getElementById('txtbox');
document.addEventListener("keydown", function(event) { 
if(txtBox.value.length>20){ 
    if(event.keyCode!=8) //backspace check
          txtBox.style.width = (( txtBox.value.length+1) * 8) + 'px'; //extends the field by 1 character width when key is pressed
    else txtBox.style.width = (( txtBox.value.length-1) * 8) + 'px';} //shrinks the field by 1 character width when backspace is pressed
});

This code will dynamically adjust the width of your field depending on the number of characters. Feel free to adjust this to your needs if something is not meeting your expectations. 

Hope this helps! 

[IMDora]

Hi Alison,

What do you mean by to make a textbox to dynamically change for inputted text?

- IMDora

[Alison]

Perfect!
Thank you, vinebath. That is exactly what I need