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var row=document.getElementById("ÐеÄId");
var index=row.rowIndex;  //ÓÐÕâ¸öÊôÐÔ£¬ºÙºÙ
objTable.deleteRow(index);
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function clearRow(){
objTable= document.getElementById("myTable");
var length= objTable.rows.length ;
for( var i=1; i<length; i++ )
{
objTable.deleteRow(i);
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