javascript常用代码记录

<script>
var s= document.body.innerHTML;
s=s.replace('待替换内容(支持正则)','目标内容');
document.body.innerHTML=s;
</script>

$('#目标id').each(function(){
  $(this).addClass('目标class')
})

$("button").click(function(){
  $("p").toggleClass("main");
});

document.getElementById('test').style.display = 'none';
document.getElementsByClassName('test').style.display = 'none';
document.getElementByTagName('p').style.display = 'none';

  $('#目标id').prop('class', '目标class');
$("#目标id").attr("target","_blank");

$("#目标id").click(function(){
事件
}

function show_date_time(){window.setTimeout("show_date_time()",1e3);var BirthDay=new Date("6/6/2015 18:18:00"),today=new Date,timeold=today.getTime()-BirthDay.getTime(),msPerDay=864e5,e_daysold=timeold/msPerDay,daysold=Math.floor(e_daysold),e_hrsold=24*(e_daysold-daysold),hrsold=Math.floor(e_hrsold),e_minsold=60*(e_hrsold-hrsold),minsold=Math.floor(60*(e_hrsold-hrsold)),seconds=Math.floor(60*(e_minsold-minsold));span_dt_dt.innerHTML=daysold+"天"+hrsold+"小时"+minsold+"分"+seconds+"秒"}
show_date_time();

 $(document).ready(function(){ 
            $('.tags span').replaceWith('目标内容'); 
        }); 

window.onresize = function(){
事件
}