iframe释放内存

html：

<div class="dialog-cnt clearfix" style="padding:10px;">
    <iframe :src="panoramaAddress" frameborder="0" style="height:100%;width:100%;" />
</div>

js：关闭iframe后调用removeIframeDom()方法

removeIframeDom() {
	  const iframeDom = document.getElementsByTagName('iframe')
	  // console.log('iframeDomBefore', iframeDom)
	  if (iframeDom.length === 0) {
		return false
	  } else {
		for (var i = 0; i < iframeDom.length; i++) {
		  // 释放iframe内存
		  iframeDom[i].src = 'about:blank'
		  try {
			iframeDom[i].contentWindow.document.write('')
			iframeDom[i].contentWindow.document.clear()
		  // eslint-disable-next-line no-empty
		  } catch (e) {}
		  // 把iframe从页面移除
		  iframeDom[i].parentNode.removeChild(iframeDom[i])
		}
	  }
	  // const iframeDomAfter = document.getElementsByTagName('iframe')
	  // console.log('iframeDomAfter', iframeDomAfter)
	}

参考链接：https://ask.dcloud.net.cn/article/36160