wangwen1220

/* IE 6 */
(checkIE = document.createElement("b")).innerHTML = "<!--[if IE 6]><i></i><![endif]-->";
var isIE = checkIE.getElementsByTagName("i").length == 1;

/* IE 7 */
(checkIE = document.createElement("b")).innerHTML = "<!--[if IE 7]><i></i><![endif]-->";
var isIE = checkIE.getElementsByTagName("i").length == 1;
navigator.appVersion.indexOf("MSIE 7.")!=-1

/* IE 8 */

wangwen1220

$('textarea').bind('input propertychange', function() {
  $('.msg').html($(this).val().length + ' characters');
});

wangwen1220

// jQuery 实现的内部链接平滑滚动
$('a[href^="#"]').bind('click.smoothscroll', function(e) {
  e.preventDefault();
  var anchor = this.hash;
  var $target = $(target);

  $('html, body').stop().animate({
    'scrollTop': $target.offset().top
  }, 500, 'swing', function() {
    window.location.hash = anchor;

wangwen1220

// jQuery 处理所有节点文本
$('#elem').contents().each(function() {
  if(this.nodeType === 3 && $.trim($(this).text())) {
    $(this).wrap('');
  }
});

wangwen1220

// jQuery 限制选择框选择个数
$("#categories option").click(function(e) {
  if ($(this).parent().val().length < 2) {
    $(this).removeAttr("selected");
  }
});

wangwen1220

// jQuery 平滑回到顶端链接
$(function() {
  $("a.gotop").click(function() {
    $("html, body").animate({
      scrollTop: $($(this).attr("href")).offset().top + "px"
    }, {
      duration: 500,
      easing: "swing"
    });
    return false;

wangwen1220

// jQuery 处理图片尺寸
$(window).bind("load", function() {
  $('#imglist img').each(function() {
    var maxWidth = 120;
    var maxHeight = 120;
    var ratio = 0;
    var width = $(this).width();
    var height = $(this).height();

    if (width > maxWidth) {

wangwen1220

// jQuery 测试密码强度
$('#pass').keyup(function(e) {
  var strongRegex = new RegExp("^(?=.{8,})(?=.*[A-Z])(?=.*[a-z])(?=.*[0-9])(?=.*\W).*$", "g");
  var mediumRegex = new RegExp("^(?=.{7,})(((?=.*[A-Z])(?=.*[a-z]))|((?=.*[A-Z])(?=.*[0-9]))|((?=.*[a-z])(?=.*[0-9]))).*$", "g");
  var enoughRegex = new RegExp("(?=.{6,}).*", "g");
  if (false == enoughRegex.test($(this).val())) {
    $('#passstrength').html('More Characters');
  } else if (strongRegex.test($(this).val())) {
    $('#passstrength').className = 'ok';
    $('#passstrength').html('Strong!');

wangwen1220

var maxHeight = 0;
$("div").each(function() {
   if ($(this).height() > maxHeight) maxHeight = $(this).height();
});
$("div").height(maxHeight);

wangwen1220

// jQuery 实现的 Facebook 风格的图片预加载效果
var preloadimg = "preload.jpg";
$(function() {
  window.setTimeout(function() {
    var img = $("<img>").attr("src", preloadimg).load(function() {
     $('div').append(img);
    });
  }, 100);
});