<div class="codetitle"> <span><a style="CURSOR: pointer" data="49473" class="copybut" id="copybut49473" onclick="doCopy('code49473')"><u>复制代码</u></a></span> 代码如下:</div> <div class="codebody" id="code49473"> <br>function cal(row) { <br>var result = 1; <br>for(var i = 0; i return result * = (row - i) / i; <br>} <br>return result; <br>}; <br> </div>