ajax and php - change text field with a button

[sugarcube]

Hi guys,

 

I'have a problem. I want to change a field with a button.

my field: <input type=\"text\" name=\"invoerregel\"><br>

my button: <input type=\"button\"  name=\"1\"  value=\"1\">

 

now is my question, how can ik change my button so, that every time I push the button it adds a 1 to the text field

[Adam]

When you say 'adds a 1' do you mean increment the value by 1, or literally add a '1' onto the end of the string?

[seventheyejosh]

// add one (string)

<script type="text/javascript">

function addOne(){

    document.getElementById('myText').innerHTML+='1';

}//end function

</script>

<textarea id="myText"></textarea>
<br>
<button onclick="addOne();">Click Me!</button>


// add one (increment)

<script type="text/javascript">

function addOne(){

    var curVal=document.getElementById('myText').innerHTML*1;
    
    document.getElementById('myText').innerHTML=curVal+1;

}//end function

</script>

<textarea id="myText"></textarea>
<br>
<button onclick="addOne();">Click Me!</button>

 

Like so?

[sugarcube]

thank you so much, it meant the first one.