Css禁用选取操作：
<div class="live" v-if="jurisdiction" unselectable="on" style="-moz-user-select:none;-webkit-user-select:none;" onselectstart="return false;">
unselectable: IE/Opera,
-moz-user-select: FireFox,
onselectstart: IE/Safari,
-webkit-user-select:Chrome
放到单独的项目活着body都行
