Aligning text vertically within a textarea

Question

Aligning text vertically within a textarea

I have been trying to implement the following HTML and JavaScript code:

<html>
<textarea id='txt' style='height:500px; widht:400px'></textarea>
<input type='text' id='input'/>
<input type='button' id='clicMe' onkeypress='fillTxt()' />

<script>
function fillTxt(){
  if(event.keyCode == 13)
      document.getElementById('txt').value += document.getElementById('input').value + <br/>;
}
</script>
</html>

My goal is to click a button and have the text from the input field added to the textarea, vertically aligned at the bottom. In other words, the newly added text should appear at the bottom of the textarea.

For example:

.-----------------------------.
|                             |
|                             |
|                             |
|  this is some text          |
'-----------------------------'

UPDATE:

I have managed to make it work now with the following code:

<div id="tBox" style=" 
    position:absolute;
    top:400px;
    left:220px;
    width:600px;
    height:334px;
    color:#666666;
    padding:5px;
    margin-bottom:25px;">

        <div id="tHolder" style="
            width:500px; 
            height:300px; 
            background-color:transparent; 
            color:#008080; 
            font-weight:bold; 
            border-style:hidden; 
            left:5px; 
            background-color:transparent;
            position:relative;
            overflow:auto;">

            <p id="txt" style='position:absolute; bottom:0; left:0;'></p>

        </div>

        <input type="text" style="width:500px; position:absolute; bottom:15px; left:8px;" id="input" name="input" onkeydown="fillTxt()" />

</div>

javascript html css textarea

Answer 1

Answer №1

There are actually two options available, but neither of them can be considered "natural" since we are essentially making things do something they don't typically do (but really, who doesn't enjoy a little challenge?)

The first option involves using a content editable <p> tag that is positioned at the bottom of a <div> container. This method is preferable as it provides elements that function like textboxes, allowing for selection and cursor placement anywhere:

 #contentEditableDiv{
        width:300px;
        height:200px;
        margin:100px auto;
        border: 1px solid #000;
        background:#EEE;
        position:relative;
        overflow:auto;
    }
    
    #editableP{
        background:red;
        min-height:10px;
        position:absolute;   
        bottom:0;
        left:0;
        right:0;
    }

 <div id="contentEditableDiv">
        <p id="editableP" contentEditable="true"></p>
    </div>

Alternatively, you can use a <div> as a placeholder for styling and have a hidden textarea synced with it. This method requires a bit more logic to replicate a true textbox, but here is the basic concept:

window.onload = (function(){
    
        var textArea = document.getElementById('textArea');
        var hiddenTextArea = document.getElementById('hiddenTextArea');
        var textHolder = document.getElementById('textHolder');
        
        textArea.addEventListener('click',function(){
            hiddenTextArea.focus();
        },false);
        
        hiddenTextArea.addEventListener('keyup',function(e){
            textHolder.innerHTML = hiddenTextArea.value;
        },false);
    
    
    }());

#textArea{
        width:300px;
        height:200px;
        margin:100px auto;
        border: 1px solid #000;
        background:#EEE;
        position:relative;
        overflow:auto;
    }
    #textHolder{
     position:absolute;   
        bottom:0;
        left:0;
    }

<div id="textArea">
        <span id="textHolder"></span>
    </div>
    <textarea id="hiddenTextArea"></textarea>

Answer 2

There are actually two options available, but neither of them can be considered "natural" since we are essentially making things do something they don't typically do (but really, who doesn't enjoy a little challenge?)

The first option involves using a content editable <p> tag that is positioned at the bottom of a <div> container. This method is preferable as it provides elements that function like textboxes, allowing for selection and cursor placement anywhere:

 #contentEditableDiv{
        width:300px;
        height:200px;
        margin:100px auto;
        border: 1px solid #000;
        background:#EEE;
        position:relative;
        overflow:auto;
    }
    
    #editableP{
        background:red;
        min-height:10px;
        position:absolute;   
        bottom:0;
        left:0;
        right:0;
    }

 <div id="contentEditableDiv">
        <p id="editableP" contentEditable="true"></p>
    </div>

Alternatively, you can use a <div> as a placeholder for styling and have a hidden textarea synced with it. This method requires a bit more logic to replicate a true textbox, but here is the basic concept:

window.onload = (function(){
    
        var textArea = document.getElementById('textArea');
        var hiddenTextArea = document.getElementById('hiddenTextArea');
        var textHolder = document.getElementById('textHolder');
        
        textArea.addEventListener('click',function(){
            hiddenTextArea.focus();
        },false);
        
        hiddenTextArea.addEventListener('keyup',function(e){
            textHolder.innerHTML = hiddenTextArea.value;
        },false);
    
    
    }());

#textArea{
        width:300px;
        height:200px;
        margin:100px auto;
        border: 1px solid #000;
        background:#EEE;
        position:relative;
        overflow:auto;
    }
    #textHolder{
     position:absolute;   
        bottom:0;
        left:0;
    }

<div id="textArea">
        <span id="textHolder"></span>
    </div>
    <textarea id="hiddenTextArea"></textarea>

Answer 3

Answer №2

Is it possible to insert text at the bottom of a textarea?

One approach could be to specify the number of rows in the textarea and use JavaScript to append multiple linefeeds before the input text.

Another option is to have a single-row textbox and add padding to create the illusion of empty rows above it.

Answer 4

Is it possible to insert text at the bottom of a textarea?

One approach could be to specify the number of rows in the textarea and use JavaScript to append multiple linefeeds before the input text.

Another option is to have a single-row textbox and add padding to create the illusion of empty rows above it.

Answer 5

Answer №3

It is beyond the capabilities of CSS to achieve this task. Using JavaScript code may be necessary in order to calculate the height of the textarea and adjust the padding accordingly.

Answer 6

It is beyond the capabilities of CSS to achieve this task. Using JavaScript code may be necessary in order to calculate the height of the textarea and adjust the padding accordingly.

Answer 7

Answer №4

One potential solution is to insert a text field within a div element and specify the distance between the top of the textarea and the top of the div, as well as the distance between the bottom of the textarea and the bottom of the div.

By automatically adjusting the height of the textarea, this approach may prove effective.

Answer 8

One potential solution is to insert a text field within a div element and specify the distance between the top of the textarea and the top of the div, as well as the distance between the bottom of the textarea and the bottom of the div.

By automatically adjusting the height of the textarea, this approach may prove effective.

Answer 9

Answer №5

Hey there, I recommend adding some padding to the textarea like so:


textarea{
    width:400px;
    height:400px;
    padding-top:100px;
    -webkit-box-sizing: border-box;
   -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
     -o-box-sizing: border-box;
        box-sizing: border-box;
}

Check out the live demo here

http://jsfiddle.net/L5TJL/

Answer 10

Hey there, I recommend adding some padding to the textarea like so:


textarea{
    width:400px;
    height:400px;
    padding-top:100px;
    -webkit-box-sizing: border-box;
   -moz-box-sizing: border-box;
    -ms-box-sizing: border-box;
     -o-box-sizing: border-box;
        box-sizing: border-box;
}

Check out the live demo here

http://jsfiddle.net/L5TJL/

Aligning text vertically within a textarea

UPDATE:

Answer №1

Answer №2

Answer №3

Answer №4

Answer №5

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