js 控制超出字数显示省略号

//多余显示省略号function wordlimit(cname, wordlength) {var cname = document.getElementsByClassName(cname);for (var i = 0; i < cname.length; i++) {var nowLength = cname[i].innerHTML.length;if (nowLength > wordlength) {cname[i].innerHTML = cname[i].innerHTML.substr(0, wordlength) + '...';}}};

//调用，description为class名

wordlimit('description', 30)