Untitled

1.Angular js validarion
<html>
    <head>
        <title>TODO supply a title</title>
        <meta charset="UTF-8">
        <meta name="viewport" content="width=device-width, initial-scale=1.0">
        <script src="angular.min.js" type="text/javascript"></script>
        <style>
            span{
                color: red;
            }
            </style>
    </head>
    <body ng-app="validation">
        <div ng-controller="crt">
            <form name="frm" novalidate ng-submit="show()">
                UserName:<input type="text" name="uname" ng-model="uname"
                                required
                                ng-minlength="4"
                                ng-maxlength="10"
                               ng-pattern="/^[a-zA-Z]+$/"
                                >

                <span ng-show="frm.uname.$dirty && frm.uname.$error.required">User Name is Required</span>
                 <span ng-show="frm.uname.$dirty && frm.uname.$error.pattern">User name must be in Alpha  character</span>
                <span ng-show="frm.uname.$dirty && frm.uname.$error.minlength">User name must be  4  character</span>
                <span ng-show="frm.uname.$dirty && frm.uname.$error.maxlength">User name must be  10 character</span>

                <br><br>Email:<input type="email" name="email" ng-model="email"
                             required
                             ng-pattern="/^[a-zA-Z0-9.!#$%&���*+/=?^_`{|}~-]+@[a-zA-Z0-9-]+(?:\.[a-zA-Z0-9-]+)*$/"
                             >
                <span ng-show="frm.email.$dirty && frm.email.$error.required">Email should no be blank</span>
                <span ng-show="frm.email.$dirty && frm.email.$error.pattern">Enter the valid Email</span>
               <br><br> Password:<input type="password" name="pwd" ng-model="pwd"
                                required
                                ng-minlength="8"
                                ng-maxlength="15"
                                >
                <span ng-show="frm.pwd.$dirty && frm.pwd.$error.required">PassWord is Required</span>
                 <span ng-show="frm.pwd.$dirty && frm.pwd.$error.minlength">PassWord is minimum 8 char</span>
                  <span ng-show="frm.pwd.$dirty && frm.pwd.$error.maxlength">PassWord is maximum 15 char</span>
                <br><br>Confirm Password:<input type="password" name="cp" ng-model="cp"
                                        required
                                        ><br><br>
                <span ng-show="frm.cp.$dirty && frm.cp.$error.required">PassWord is Required</span>
                <input type="submit" value="Submit" ng-disabled="frm.$invalid">

            </form>

        </div>

        <script>
            var app=angular.module("validation",[]);
            app.controller("crt",function($scope){
                $scope.show=function(){
                    alert($scope.uname+" "+$scope.email);
                    window.print();
                }
            });

        </script>
    </body>
</html>


2.file
var fs = require('fs');
//fs.unlinkSync('./avanish.txt');
//fs.renameSync('./new.txt','./avanish.txt');,funcfunction
//fs.writeFile('./avanish.txt','this is simpoelmjhdffgd','utf8',function (error,data){
 // fs.readFile('./avanish.txt','utf8',function (error,data){
  //      console.log(data);
 // })
  // console.log(fs.readFileSync('./avanish.txt','utf8'));
//});
        //console.log(data);
  console.log('Saved!');

3.stop watch
<html>
<head>
<title>TODO supply a title</title><meta charset="UTF-8"><meta name="viewport" content="width=device-width, initial-scale=1.0"></head><body><button id="time">00:00:00</button><br><br><button id="start" onclick="timer()">Start</button><button id="stop" onclick="clearTimeout(t)">Stop</button><button id="clear" onclick="cleartime()">Reset</button><script>var h1 = document.getElementById("time"),start = document.getElementById('start'),stop = document.getElementById('stop'),clear = document.getElementById('clear'),seconds = 0, minutes = 0, hours = 0,t;function add() {seconds++;if (seconds >= 60) {seconds = 0;minutes++;if (minutes >= 60) {minutes = 0;hours++;}}
h1.textContent = (hours ? (hours > 9 ? hours : "0" + hours) : "00") + ":" + (minutes ? (minutes > 9 ? minutes : "0" + minutes) : "00") + ":" + (seconds > 9 ? seconds : "0" + seconds);timer();}function timer() {t = setTimeout(add, 1000);}function cleartime() {h1.textContent = "00:00:00";seconds = 0; minutes = 0; hours = 0;}</script></body>
</html>
4.append text box
function f1()
{
var para=document.createElemtent('input');
para.setAttribute("type","text");
var e=document.getElementById('div1');
e.appendchild(para);
}
5.append text
function f1()
{
var para=document.createElement('p');
var data=document.createText("CDAC");
para.appendChild(data);
document.body.appendChild(para);
}
6.textbox printing name
<body ng-app="myapp">
<div ng-controller="crt">
Name:<input type="text" name="name" ng-model="name">
show name{{name}}
var.app=angular.model(("myapp",[]);
app.controler(crt,function($scope){
$scope.name="";
});
7.factorial
fact=function(num){
    var f=1;
    for(var i=1;i<=num;i++)
    {
        f=f*i;
    }
    return f;
}

console.log("factorial="+fact(5));
8.palidrom
exports.palindrom=function()
{
var no=121;
var sum=0;
var temp=no;
while(no>0)
{
    rem=no%10;
    sum=(sum*10)+rem;
    no=Math.floor(no/10);
}
if(temp==sum)
    console.log("no is palindrom");
else
    console.log("no is not pal9ndrom");
console.log(sum);
}

//function append()
//{
//    var h=document.createElement("p");
//   // var txt=document.getElementById("txt")
//   // var t=document.createTextNode(txt)
//   var d=document.createTextNode("helloooo");
//   h.appendChild(d);
//   document.body.appendChild(h);
//
//}
var ex=require('./palindrom.js');
//facto.factorial();
ex.palindrom();
//console.log(ex,factorial1());
//console.log(ex,palindrom());

10.express validation
index.js
var express = require('express');
var router = express.Router();

/* GET home page. */
router.get('/', function(req, res, next) {
  res.render('index', { title: 'Express',success:req.session.success,errors:req.session.errors});
  req.session.errors=null;
});
router.post('/submit',function(req,res,next){
    req.check('email','invalid email address').isEmail();
    req.check('password','password is invalid').isLength({min:4}).equals(req.body.confirmpassword);
    var errors=req.validationErrors();
    if(errors)
    {
        req.session.errors=errors;
        req.session.success=false;
    }
    else
    {
        req.session.success=true;
    }
    res.redirect('/');
});
module.exports = router;

hbs
<h1>{{title}}</h1>
{{#if success}}
<h2>Successfull validation</h2>

{{else}}
{{#if errors}}
{{#each errors}}
{{this.msg}}<br>
{{/each}}

{{/if}}
<form action="/submit" method="post">
<label for="email">Email</label>
<input type="text" id="email" name="email"><br>
<label for="password">password</label>
<input type="password" id="password" name="password"><br>
<label for="confirmpassword">confirm password</label>
<input type="password" id="confirmpassword" name="confirmpasswo<input type="password" id="password" name="password"><br>
rd"><br>
<button type="submit">Sign Up</button>
</form>
{{/if}}

app.js
var createError = require('http-errors');
var express = require('express');
var path = require('path');
var cookieParser = require('cookie-parser');
var lessMiddleware = require('less-middleware');
var logger = require('morgan');
var expressValidator = require('express-validator');
var expressSession = require('express-session');

var indexRouter = require('./routes/index');
var usersRouter = require('./routes/users');

var app = express();

// view engine setup
app.set('views', path.join(__dirname, 'views'));
app.set('view engine', 'hbs');

app.use(logger('dev'));
app.use(express.json());
app.use(express.urlencoded({ extended: false }));
app.use(expressValidator());
app.use(cookieParser());
app.use(lessMiddleware(path.join(__dirname, 'public')));
app.use(express.static(path.join(__dirname, 'public')));
app.use(expressSession({secret:'max',saveUnintialized:false,resave:false}));
app.use('/', indexRouter);
app.use('/users', usersRouter);

// catch 404 and forward to error handler
app.use(function(req, res, next) {
  next(createError(404));
});

// error handler
app.use(function(err, req, res, next) {
  // set locals, only providing error in development
  res.locals.message = err.message;
  res.locals.error = req.app.get('env') === 'development' ? err : {};

  // render the error page
  res.status(err.status || 500);
  res.render('error');
});

module.exports = app;