常用的代码收集

防止被Iframe嵌套

if(top != self){
    location.href = ”about:blank”;
}

瀑布流无限加载

// be dependent on jquery & jquery.infinitescroll.min.js
// insert this '
' to your page.html
(function($){
  $(function(){
      var $container = $('.list-wrap-gd');
      function layOutCallBack() {
          $container.imagesLoaded(function(){
              $container.masonry({
                  itemSelector: '.item-bar',
                  gutter: 10
              });
          });
          $container.imagesLoaded().progress( function() {
              $container.masonry('layout');
          });
      }

      layOutCallBack();

      $container.infinitescroll({
          navSelector : "#more",
          nextSelector : "#more a",
          itemSelector : ".item-bar",
          pixelsFromNavToBottom: 300,
          loading:{
              img: "/images/masonry_loading.gif",
              msgText: ' ',
              finishedMsg: "已经到最后一页",
              finished: function(){
                  $("#more").remove();
                  $("#infscr-loading").hide();
              }
          },
          errorCallback:function(){
              $(window).unbind('.infscr');
          },
          pathParse: function (path, nextPage) {
              var query = "";
              var keyword=$("#search_keyword").val();
              var cat_id=$("#cat_id").val();
              var brand_id=$("#brand_id").val();
              var country_id = $("#country_id").val();
              query = query + "&namekeyword="+keyword;
              query = query +"&cat_id="+cat_id
              query = query + "&brand_id=" + brand_id; 
              query = query + "&country_id=" + country_id;
              path = [path,query];
              return path;
          }
      },

      function(newElements) {
          var $newElems = $( newElements ).css({ opacity: 0 });
          $newElems.imagesLoaded(function(){
              $newElems.animate({ opacity: 1 });
              $container.masonry( 'appended', $newElems, true );
              layOutCallBack();
          });
      });
  });
})(jQuery);

获取地理位置

function getLocation(callback){
  if(navigator.geolocation){
      navigator.geolocation.getCurrentPosition(
              function(p){
                  callback(p.coords.latitude, p.coords.longitude);
              },
              function(e){
                  var msg = e.code + "\n" + e.message;
              }
      );
  }
}

如何通过 js 修改微信浏览器的title?

var $body = $('body');
document.title = 'title'; // hack在微信等webview中无法修改document.title的情况    
var $iframe = $('').on('load', function(){ 
    setTimeout(function(){ 
        $iframe.off('load').remove() 
    }, 0) 
}).appendTo($body)

设置cookies 和获取cookies

//设置
function setCookie(name, value, Hours) {
    var d = new Date();
    var offset = 8;
    var utc = d.getTime() + (d.getTimezoneOffset() * 60000);
    var nd = utc + (3600000 * offset);
    var exp = new Date(nd);
    exp.setTime(exp.getTime() + Hours * 60 * 60 * 1000);
    document.cookie = name + "=" + escape(value) + ";path=/;expires=" + exp.toGMTString() + ";domain=360doc.com;"
}
//获取
function getCookie(name) {
    var arr = document.cookie.match(new RegExp("(^| )" + name + "=([^;]*)(;|$)"));
    if (arr != null) return unescape(arr[2]);
    return null
}

动态添加样式表

function LoadStyle(url) {
    try {
        document.createStyleSheet(url)
    } catch(e) {
        var cssLink = document.createElement('link');
        cssLink.rel = 'stylesheet';
        cssLink.type = 'text/css';
        cssLink.href = url;
        var head = document.getElementsByTagName('head')[0];
        head.appendChild(cssLink)
    }
}

动态加载脚本文件

function appendscript(src, text, reload, charset) {
    var id = hash(src + text);
    if(!reload && in_array(id, evalscripts)) return;
    if(reload && $(id)) {
        $(id).parentNode.removeChild($(id));
    }

    evalscripts.push(id);
    var scriptNode = document.createElement("script");
    scriptNode.type = "text/javascript";
    scriptNode.id = id;
    scriptNode.charset = charset ? charset : (BROWSER.firefox ? document.characterSet : document.charset);
    try {
        if(src) {
            scriptNode.src = src;
            scriptNode.onloadDone = false;
            scriptNode.onload = function () {
                scriptNode.onloadDone = true;
                JSLOADED[src] = 1;
             };
             scriptNode.onreadystatechange = function () {
                 if((scriptNode.readyState == 'loaded' || scriptNode.readyState == 'complete') && !scriptNode.onloadDone) {
                    scriptNode.onloadDone = true;
                    JSLOADED[src] = 1;
                }
             };
        } else if(text){
            scriptNode.text = text;
        }
        document.getElementsByTagName('head')[0].appendChild(scriptNode);
    } catch(e) {}
}