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JavaScript - Get minutes between two dates
...- today); // milliseconds between now & Christmas
var diffDays = Math.floor(diffMs / 86400000); // days
var diffHrs = Math.floor((diffMs % 86400000) / 3600000); // hours
var diffMins = Math.round(((diffMs % 86400000) % 3600000) / 60000); // minutes
alert(diffDays + " days, " + diffHrs + " ho...
How to split data into training/testing sets using sample function
... a simple example:
data(mtcars)
## 75% of the sample size
smp_size <- floor(0.75 * nrow(mtcars))
## set the seed to make your partition reproducible
set.seed(123)
train_ind <- sample(seq_len(nrow(mtcars)), size = smp_size)
train <- mtcars[train_ind, ]
test <- mtcars[-train_ind, ]
...
Shiro vs. SpringSecurity [closed]
... ref="securityManager"/>
<property name="loginUrl" value="/login.jsp"/>
<property name="successUrl" value="/home.jsp"/>
<property name="unauthorizedUrl" value="/unauthorized.jsp"/>
<property name="filterChainDefinitions">
<value>
/secu...
How to submit form on change of dropdown list?
I am creating a page in JSP where I have a dropdown list and once the user selects a value he has to click on the go button and then the value is sent to the Servlet.
...
Resizing an image in an HTML5 canvas
...u) {
self.center.x = (u + 0.5) * self.ratio;
self.icenter.x = Math.floor(self.center.x);
for (var v = 0; v < self.dest.height; v++) {
self.center.y = (v + 0.5) * self.ratio;
self.icenter.y = Math.floor(self.center.y);
var a, r, g, b;
a = r = g = b = 0;
...
How do you get a timestamp in JavaScript?
...ate().getTime(); }
}
To get the timestamp in seconds, you can use:
Math.floor(Date.now() / 1000)
Or alternatively you could use:
Date.now() / 1000 | 0
Which should be slightly faster, but also less readable (also see this answer).
I would recommend using Date.now() (with compatibility shim)...
Make a number a percentage
...anything fancy:
var number1 = 4.954848;
var number2 = 5.9797;
alert(Math.floor((number1 / number2) * 100)); //w00t!
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谈谈创业公司技术的工作模式 - 资讯 - 清泛网 - 专注C/C++及内核技术
...横向切分，一些人研发service、一些人研发dao，一些研发jsp会增加不必要的沟通浪费时间。如果后面项目庞大了，还是建议应该增加一个专业的前端js开发和后台DBA。研发开发好自己的业务代码对功能进行测试，测试ok技术总监确...
What is @ModelAttribute in Spring MVC?
...or my style, I always use @ModelAttribute to catch object from spring form jsp. for example, I design form on jsp page, that form exist with commandName
<form:form commandName="Book" action="" methon="post">
<form:input type="text" path="title"></form:input>
</form:form&g...
How to convert an NSTimeInterval (seconds) into minutes
...
pseudo-code:
minutes = floor(326.4/60)
seconds = round(326.4 - minutes * 60)
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