How to insert new HTML code into existing page?

imagine you have simple page like this:

Hi everybody. when you click here new text will be inserted.

after c开发者_如何学Click :

Hi everybody. when you "ulala ... I am inserted text" new text will be inserted.

1. is it possible to insert this text using PHP or Javascript?
2. If only javascript is appropriate may you provide a sample code?

thanx a lot

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It's easiest with jQuery, but you can use Javascript DOM methods for that.

To make a link happen something, use onClick="js_something()". And to insert text use $('#id').text('new text').

PHP comes only into play if that new text is to be retrieved from a server resource (url). If so use AJAX, or simply .load(".../get_text.php") in jQuery.

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Your HTML:

<p>Hi everybody. when you <span id="mytext"><a href="javascript:EditText()">click here</a></span> new text will be inserted.</p>

Your Javascript:

<script type="text/javascript">
  function EditText() {
      document.getElementById('mytext').innerHTML = 'ulala... I am inserted text';
  }
</script>

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In Javascript try following:

function fun(){
document.getElementById("text_area").innerHTML = document.getElementById("text_area").value + "New str";
}

call fun() on onclick of "Click here" which has an id text_area and could be div or span or input or textarea any other html tag wherever you wanna add new String.

Hope this helps.