如果有一个数组，我们只取其中的偶数或奇数该如何取值呢，下面一组数据是我们通过接口拿到的，其实我们只要奇数的一部分，1，3，5，7…等，如图：
\["1701班",11,0,"0%",0,"0%",0,"0%",1,"9.09%",7,"63.64%",2,"18.18%",0,"0%",0,"0%",0,"0%",1,"9.09%"\]
!\[](http://www.w3cbest.com/wp-content/uploads/2018/09/20180926133157.jpg) 我们只要一个if条件判断就可以了，操作如下： js
res = {"data":{
"head":\["人数","比例"\],
"datas":\[
{"data":\["1701班",11,0,"0%",0,"0%",0,"0%",1,"9.09%",7,"63.64%",2,"18.18%",0,"0%",0,"0%",0,"0%",1,"9.09%"\]},
{"data":\["班级平均",21,"0","0%","0","0%","0","0%","3","28.57%","5","47.62%","1.5","14.29%","0","0%","0","0%","0.5","4.76%","0.5","4.76%"\]},
{"data":\["全年级",21,0,"0%",0,"0%",0,"0%",6,"28.57%",10,"47.62%",3,"14.29%",0,"0%",0,"0%",1,"4.76%",1,"4.76%"\]}
\],
"title":\["90以下","90 ~ 97","97 ~ 104","104 ~ 111","111 ~ 118","118 ~ 125","125 ~ 132","132 ~ 139","139 ~ 146","146以上"\]
}
}
document.getElementById('id').innerHTML = template('tpl', res);template
<script id="tpl" type="text/html">
<thead>
<tr>
<th>班级</th>
{{each title value i}}
<th>{{value}}</th>
{{/each}}
</tr>
</thead>
<tbody>
{{each datas item}}
<tr>
{{each item.data value i}}
{{if (i % 2 == 0)}}
<td>{{value}}</td>
{{/if}}
{{/each}}
</tr>
{{/each}}
</tbody>
</script>其实很简单，就跟跟平时普通的if判断一样，都是取模，但是要注意在这里面要有始有终，有{{if}}就得有对应的{{/if}}，有{{each}}就得有对应的{{/each}}
