<style>
pre .btn-pre-copy {
-webkit-user-select: none;
-moz-user-select: none;
-ms-user-select: none;
-khtml-user-select: none;
user-select: none;
position: absolute;
top: 10px;
right: 12px;
font-size: 12px;
line-height: 1;
cursor: pointer;
color: hsl(0deg 0% 100%);
transition: color .1s;
background-color: #03A9F4;
padding: 5px;
}
</style>
<script>
$(function(){
let preList = $(".content pre");
for (let pre of preList) {
let btn = $("<span class=\"btn-pre-copy\" onclick='preCopy(this)'>复制代码</span>");
btn.prependTo(pre);
}
});
function preCopy(obj) {
let btn = $(obj);
let pre = btn.parent();
let temp = $("<textarea></textarea>");
btn.text("");
temp.text(pre.text());
temp.appendTo(pre);
temp.select();
document.execCommand("Copy");
temp.remove();
btn.text("复制成功");
setTimeout(()=> {
btn.text("复制代码");
},1500);
}
</script>