JS实现全选

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<body>
afefeLZ<br>

<a href="fdjlfj">fafljal</a><br>

1245<br>
<img src="logo.gif"><br>
fefefe</body>
<script type="text/javascript">
function selectCode(a){var e= a; if(document.all){var r=document.selection.createRange();r.moveEnd("character",e.innerText.length);r.select();}else{var s = window.getSelection(); var r = document.createRange();r.selectNodeContents(e); s.removeAllRanges(); s.addRange(r);}} 


//window.onload=function(){selectCode(document.body);}
</script> 

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