缩短jQuery函数

$(function() {
    $('h2, h3, h4, p').each(function() {
        var $h = $(this);
        var html = $h.html();
        html = html.replace( ' ', '' );
        $h.html( html );
    });
})

$(function() { ... });

, $('h2,h3,h4,h5').each(function() {....}); 由他人提议。

var html = $h.html();
html = html.replace(' ', '');

var html = $h.html().replace(' ', '');

$h.html($h.html().replace(' ', ''));

$h.html(function(index, oldHtml) { return oldHtml.replace(' ', ''); });

// generic replace in html function - proxies all the arguments to 
// .replace()
$.fn.replaceHtml = function() {
  var replaceArgs = arguments;
  // jQuery 1.4 allows
  return this.html(function(idx, oldHtml) {
    return oldHtml.replace.apply(oldHtml, replaceArgs);
  });
  // older versions / another way to write it
  // return this.each(function() { 
  //   var $t = $(this), html = $t.html();
  //   $t.html(html.replace.apply(html, replaceArgs));
  // });
};

// single task that uses the replaceHtml function
$.fn.removeNBSP = function() {
  return this.replaceHtml(' ', '');
};

$('h1,h2,h3,h4,h5,p').removeNBSP(); 

$(function() {
   $('h2, h3, h4, p').html(function(){ return $(this).html().replace(" ", "") }) 
});