javascript 常用代码

<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>

<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')
})

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

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

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

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

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

$("#目标id").click(function(){
事件
}

$("#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();

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'); 
        });

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