How to wrap all text into unique span tag?

Question

I want to wrap all body text(each word) into unique span tag.

Before wrap :

    

  
word word 
         


        
      

Answer 1

(function (count) {
  'use strict';
  (function wrap(el) {
    $(el).contents().each(function () {
      // Node.* won't work in IE < 9, use `1`
      if (this.nodeType === Node.ELEMENT_NODE) {
        wrap(this);
      // and `3` respectively
      } else if (this.nodeType === Node.TEXT_NODE) {
        var val = $.trim(this.nodeValue);
        if (val.length > 0) {
          $(this).replaceWith($.map(val.split(/\s+/), function (w) {
            return $('', {id: count = count + 1, text: w}).get();
          }));
        }
      }
    });
  }('body'));
}(0));

http://jsfiddle.net/LNLvg/3/

update: this version does not silently kill the whitspace ;)

(function (count) {
  'use strict';
  (function wrap(el) {
    $(el).filter(':not(script)').contents().each(function () {
      if (this.nodeType === Node.ELEMENT_NODE) {
        wrap(this);
      } else if (this.nodeType === Node.TEXT_NODE && !this.nodeValue.match(/^\s+$/m)) {
        $(this).replaceWith($.map(this.nodeValue.split(/(\S+)/), function (w) {
          return w.match(/^\s*$/) ? document.createTextNode(w) : $('', {id: count = count + 1, text: w}).get();
        }));
      }
    });
  }('body'));
}(0));

http://jsfiddle.net/mtmqR/1/