How can I: Select a paragraph with JavaScript (on click)?

If you need to support later browsers, i.e., IE9+, you can use the following

document.querySelector('button').addEventListener('click', function(){
    var range = document.createRange();
    var selection = window.getSelection();
    range.selectNodeContents(document.querySelector('p'));
    
    selection.removeAllRanges();
    selection.addRange(range);
});
                                          
                                          
                                          
                                          

Hello <p>Select me</p> World
<button id ='btn'>Select text</button>

Related links:

• The spec: http://www.w3.org/TR/DOM-Level-2-Traversal-Range/ranges.html#Level2-Range-method-selectNodeContents
• http://help.dottoro.com/ljcpcpnt.php
• https://developer.mozilla.org/en-US/docs/Web/API/range.selectNodeContents
• https://developer.mozilla.org/en-US/docs/Web/API/Selection.addRange

For support across all browsers, see https://github.com/timdown/rangy from https://stackoverflow.com/users/96100/tim-down

select() Will only work on <input> and <textarea> elements...

Also yes, you will have to use:

contenteditable="true"

And use .focus() to select all the text.

Try this:

<p id="editable" contenteditable="true" 
onfocus="document.execCommand('selectAll',false,null);">Your Text Here</p>

<button onclick="document.getElementById('editable').focus();" >Click me</button>

JSFiddle Demo