document.write('<div>解析：</div><div>function ClearNullArr(arr)</div><div>{</div><div>&nbsp;for(var i=0,len=arr.length;i&lt;len;i++)</div><div>&nbsp;{</div><div>&nbsp;if(!arr[i]||arr[i]==\'\'||arr[i] === undefined)</div><div>&nbsp;{</div><div>&nbsp;arr.splice(i,1);</div><div>&nbsp;len--;</div><div>&nbsp;i--;</div><div>&nbsp;}</div><div>&nbsp;}</div><div>&nbsp;return arr;</div><p>}&nbsp;</p>');