关于点击button显示隐藏

#div1{

height: 200px;

width: 500px;

background: skyblue;

display: none;

}

<input type="button" name="" id="button" value="点我点我" />

<div id="div1">

 </div>

<script type="text/javascript">

var contant = document.getElementById('div1');

var Button = document.getElementById('button');

// var off = true;

//获取操作的标签

Button.onclick = function(){

if(contant.style.display == 'none'){

contant.style.display = 'block';//点击需要两次是因为刚开始没有获取到样式。写为div内部样式即可。如：<div id="div1" style="display:none;"> </div>

// off = false;

}

else{

contant.style.display = 'none';

// off = true;

}

}

</script>