Question

I have set a default value in textarea. I want that when someone clicks on the textarea the default value disappears. Whats the HTML code for that?

Answer 1

<textarea onfocus="this.value = ''">This is my default value</textarea>

this is the little piece of code responsible:

onfocus="this.value = ''"

basically when the focus event is fired, the value of the current field is set to an empty string ""

of course you can make it more complexe and make sure it only erase when the element contains the default message:

<textarea id="myfield">This is my default value</textarea>

javascript:

var defaultMsg = "This is my default value";
document.getElementById("myfield").onfocus = function () {
   if (this.value == defaultMsg) {
      this.value = "";
   }
}

document.getElementById("myfield").onblur = function () {
   if (this.value == "") {
      this.value = defaultMsg;
   }
}