doctorcat

const objectParser = (data, path = '') => Object.assign({
  [path || '<root>']: data,
}, ...(data instanceof Object
  ? Object.entries(data).map(([ k, v ]) => objectParser(v, `${path}[${k}]`))
  : []
));

$(".items").on("click", ".item", deleteFile);

function deleteFile (e) {
   console.log($(e.target).data('fileName'));
}

<div class="wrapper">
  <div class="inner">
  <div class="block-title">
    <p>
      наши партнеры
    </p>
  </div>
  <ul class="partners-list">
    <li class="partners-list-item">
        <span class="item-thumbnail"></span>
    </li>
      <li class="partners-list-item">
        <span class="item-thumbnail"></span>
    </li>
     <li class="partners-list-item">
        <span class="item-thumbnail"></span>
    </li>
     <li class="partners-list-item">
        <span class="item-thumbnail"></span>
    </li>
      <li class="partners-list-item">
        <span class="item-thumbnail"></span>
    </li>
      <li class="partners-list-item">
        <span class="item-thumbnail"></span>
    </li>
  </ul>
  </div>
</div>

.wrapper {
    background-color: #fff;
    border-radius:10px;
    padding:20px;
    position: relative;
    max-width: 500px;
    clear: both;
    overflow: hidden;
}
.inner {
  position: relative;
  border:1px solid green;
  padding: 15px;
}
.block-title {
 position: relative;
 top:-25px;
 text-align: center;
}
.block-title p {
  color:green;
  text-transform: uppercase;
  display: inline;
  margin: 0 auto;
  background-color: white;
  padding: 10px;
}
.partners-list {
  width: 100%;
  position: relative;
  list-style-type: none;
  font-size:0;
  padding: 0;
  margin: 0;
}
.partners-list-item {
  display: inline-block;
  text-align: center;
  width: 15%;
  margin-right: 2%;
  min-height: 100px;
  background-color: red;
}
.partners-list-item:last-of-type{
  margin-right: 0;
}