前端笔记

jquery

scroll操作

让滚动条在最下面： $("#messages").scrollTop($("#messages")[0].scrollHeight);

css

pre自动换行：

pre { white-space: pre-wrap; /* css-3 */ white-space: -moz-pre-wrap; /* Mozilla, since 1999 */ white-space: -pre-wrap; /* Opera 4-6 */ white-space: -o-pre-wrap; /* Opera 7 */ word-wrap: break-word; /* Internet Explorer 5.5+ */ }

js

根据字符串生成下载文件：

function downloadFile(fileName, content){ var aLink = document.createElement('a'); var blob = new Blob([content]); var evt = document.createEvent("HTMLEvents"); evt.initEvent("click", false, false);//initEvent 不加后两个参数在FF下会报错, 感谢 Barret Lee 的反馈 aLink.download = fileName; aLink.href = URL.createObjectURL(blob); aLink.dispatchEvent(evt); }

停止setInterval

timer = setInterval(“yourFunction1”,时间); clearInterval(timer) 取消全部：clearInterval()