https://blog.csdn.net/yilia_jia/article/details/81559121
clamp js
链接:https://pan.baidu.com/s/1C1SUdXMKa-pEFSyRUOgPPw
提取码:hz6f
//两行超出部分隐兼容
var node1=document.getElementsByClassName("ebook_info");
for (var i = 0; i < node1.length; i++){
$clamp(node1[i],{clamp:2})
}
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