function query(name) {
  const reg = new RegExp("(^|&)" + name + "=([^&]*)(&|$)");
  const r = window.location.search.substr(1).match(reg);
  if(r!=null)return  unescape(r[2]); return null;
}

function item (arr) {
  var html = "";
  arr.forEach((v, i) => {
    html += `
        <a href="./page/info.html?id={v,id}">
      <li>
          <div class="newest_img">
              <a href="./info.html?id=${v.id}">
                  <!--图片地址-->
                  <img src="${v.preview || v.img}" alt="${v.title}">
              </a>
              <span>${v.total}套</span>
          </div>
          <div class="newest_text">
              <a href="./info.html?id=${v.id}">
                  <p class="t">${v.title}</p>
                  <p class="source">${v.user}</p>
                  <p class="source">${ v.source.length > 5 ? '' :`${v.source}`}</p>
              </a>
              
              <div class="tags">
              ${(v.tags.map((item,index)=>{
                return `<div class="tags_item">
                          <a href="./mechanism_info.html?id=${v.id}&amp;type=tags&amp;t=${v.title}">
                            ${item.title}
                          </a>
                        </div> `
                })).toString().replace(/,/g,"")}
                  
                  
              </div>
          </div>
      </li>
      </a>
    `
  })
  return html;
}