从多个文本输入框复制到文本区域：

Question

I have 4 input text fields which I want to have them copy to a text area, I have tried to do the same as make each copy to a seperate text input field, but that did not work.

My code is as follows:

<fieldset>
        <legend>Page Message:</legend>
        <div class="textarey">
        <input type="text" class="lookalike" id="message_text1" name="message_text1" onkeyup="copy_data(this);  if(this.value.length>=24) document.editPage.message_text2.focus()" style="text-decoration:ltr;" value="<?php echo $page['message_text']; ?>" size="38" maxlength="24"><br>

        <input type="text" id="message_text2" name="message_text2" maxlength="24" size="38" class="lookalike"  style="text-decoration:ltr;"  value="<?php echo $page['message_text']; ?>" onkeyup="copy_data(this); if(this.value.length>=24) document.editPage.message_text3.focus()"><br>

        <input type="text" id="message_text3" name="message_text3" maxlength="24" size="38" class="lookalike"  style="text-decoration:ltr;"   value="<?php echo $page['message_text']; ?>" onkeyup="copy_data(this);  if(this.value.length>=24) document.editPage.message_text4.focus()"><br>

        <input type="text" id="message_text4" name="message_text4" size="42" class="lookalike"  style="text-decoration:ltr;"  value="<?php echo $page['message_text']; ?>" onkeyup="copy_data(this)">
 </div>


      <textarea id="message" /><?php echo $page['message']; ?></textarea>

And the Javascript that copies from the fields is here:

   function copy_data(val){ 
        var messageText = document.getElementById(val.id).value 
            document.getElementById('message').innerHTML = messageText;


} 

My issue is that every time a textfield gets to the end of it's maxchars it clears the text area. Anyone have any ideas here?

Thanks

Answer 1

<script type="text/javascript">
var text = "";
  for(var x=1;x<=4;x++) {
     text += document.getElementById("message_text"+x).value;
     text += "
";
  }
  document.getElementById("message").value = text;
</script>

• you might consider making a function for copying from whatever input you want into whatever element.