内存泄漏 导致的后果

会导致页面卡顿，页面崩溃

5，6 秒以后，就能体会到内存泄漏的结果

 

 

<style>
#top{
    width: 100px;
    height: 100px;
    background: red;
}</style>
<body>
    <div id="top"></div>
</body>
<script>
    var t = null;
var replaceThing = function() {
  var o = t
  var unused = function() {
    if (o) {
      console.log("hi")
    }        
  }
  
  t = {
        longStr: new Array(100000).fill('*'),
        someMethod: function() {
                       console.log(1)
                    }
      }
}
setInterval(replaceThing, 10);

var dom = document.getElementById('top');
var isBlue = true;
dom.addEventListener('click', function (params) {
    dom.style.background = isBlue?'blue':'red';
    isBlue = !isBlue;
});

 

posted on 2020-09-23 14:33  chenyi4  阅读(671)  评论(0)  编辑  收藏  举报

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