tab-sample

index.html

<div class="wrap-tab">
	<ul id="js-tab" class="list-tab">
		<li class="active">全て</li>
		<li>報知</li>
    <li>通達</li>
 </ul>
	
	<div class="wrap-tab-content">
		<div class="tab-content active">
			<p>通達１</p>
			<p>報知１</p>
			<p>通達２</p>
			<p>報知２</p>
		</div>

		<div class="tab-content">
			<p>通達１</p>
			<p>通達２</p>
		</div>
		
		<div class="tab-content">
			<p>報知１</p>
			<p>報知２</p>
		</div>
		
	</div>
</div>

script.js

document.addEventListener('DOMContentLoaded', function(){
	tabs = document.querySelectorAll('#js-tab li');
	for(i = 0; i < tabs.length; i++) {
		tabs[i].addEventListener('click', tabSwitch, false);
	}

	function tabSwitch(){
    tabs = document.querySelectorAll('#js-tab li');
    var node = Array.prototype.slice.call(tabs, 0);
    node.forEach(function (element) {
      element.classList.remove('active');
    });
		this.classList.add('active');

    content = document.querySelectorAll('.tab-content');
    var node = Array.prototype.slice.call(content, 0);
    node.forEach(function (element) {
      element.classList.remove('active');
    });

		const arrayTabs = Array.prototype.slice.call(tabs);
		const index = arrayTabs.indexOf(this);
    
    document.querySelectorAll('.tab-content')[index].classList.add('active');
	};
});

style.css

ul{
  margin: 0;
  padding: 0;
  list-style-type: none;
}
p{
  margin: 0;
}
.wrap-tab{
  overflow: hidden;
}

.list-tab{
  display: flex;
  margin: 0 -2px;
  border-bottom: 3px solid #5bbee5;
}
.list-tab > li{
  display: block;
  padding: 0.5em 1em;
  margin: 0 2px;
  width: 100%;
  color: #fff;
  text-align: center;
  background: #ccc;
  box-sizing: border-box;
  cursor: pointer;
}

.list-tab .active{
  background: #5bbee5;
}

.tab-content{
  display: none;
  padding: 1em;
  border-bottom: 1px solid #5bbee5;
  border-left: 1px solid #5bbee5;
  border-right: 1px solid #5bbee5;
}
.tab-content.active{
  display: block;
}

tab-sample.markdown

tab-sample

A Pen by shiraco on CodePen.

License.