https://instant.page/
http://instantclick.io
预加载js （放在body标签里）
<script src="//instant.page/3.0.0" type="module" defer integrity="sha384-OeDn4XE77tdHo8pGtE1apMPmAipjoxUQ++eeJa6EtJCfHlvijigWiJpD7VDPWXV1"></script>https://instant.page/
http://instantclick.io
预加载js （放在body标签里）
<script src="//instant.page/3.0.0" type="module" defer integrity="sha384-OeDn4XE77tdHo8pGtE1apMPmAipjoxUQ++eeJa6EtJCfHlvijigWiJpD7VDPWXV1"></script>