Document write disadvantages

The document.write has the following disadvantages

A few of the more serious problems:

• document.write (henceforth DW) does not work in XHTML
• DW executed after the page has finished loading will overwrite the page, or write a new page, or not work
• DW executes where encountered: it cannot inject at a given node point
• DW is effectively writing serialised text which is not the way the DOM works conceptually, and is an easy way to create bugs (.innerHTML has the same problem)
  Reference:
  http://stackoverflow.com/questions/802854/why-is-document-write-considered-a-bad-practice