problem description
get a piece of json data using ajax. The data are as follows:
{
"news": [
{
"title": "1",
"time": "2018"
},
{
"title": "2",
"time": "2018"
},
{
"title": "3",
"time": "2017"
},
{
"title": "4",
"time": "2016"
}
]}
I want to take out the news headlines by year and render them on the page. The structure of the page is as follows:
< div class= "wrap" >
<div class="year">
<span>2018</span>
<ul>
<li>1</li>
<li>2</li>
</ul>
</div>
<div class="year">
<span>2017</span>
<ul>
<li>3</li>
</ul>
</div>
<div class="year">
<span>2016</span>
<ul>
<li>4</li>
</ul>
</div>< / div >
now I don"t know what traversal is like. How can you traverse twice?