javascript-programes/statements.html at master · VinayManyam/javascript-programes · GitHub

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<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<script>
function load(){
var n1=parseInt(document.getElementById("n1").value);
var n2=parseInt(document.getElementById("n2").value);
var sum=n1+n2;
var mul=n1*n2;
document.getElementById("sum").innerHTML="sum="+sum;
document.getElementById("mul").innerHTML="mul="+mul;

}
function pin(){
var pin=document.getElementById("pin").value;
if(pin==1234)
document.getElementById("er").innerHTML="success fully loged with password";
else if(pin==4321)
document.getElementById("er").innerHTML="success fully loged with phone";
else
document.getElementById("er").innerHTML="wrong pin ! please try again";
}


function pay()
{
var pin=document.getElementById("pin2").value;
var date=document.getElementById("date").value;
var csv=document.getElementById("csv").value;
var msg=document.getElementById("status");

if(pin=="1234")
{
	if(date=='2018')
	{
	if(csv=='1234')
	{
	msg.innerHTML="payment successfull";
	}else{
	msg.innerHTML="csv is wrong";
	}
	}else{
	msg.innerHTML="exp date is wrong";
	}
}

else{
msg.innerHTML="wrong pin";
}
}


function order(){

name=document.getElementById("uname").value;
item1=document.getElementById("item1");
item2=document.getElementById("item2");
item3=document.getElementById("item3");
item4=document.getElementById("item4");
price=0;

if(item1.checked)
	{
	price=100;
	mname='item1';

	}

	if(item2.checked)
	{
	price=150;
	mname='item2';
	}
	if(item3.checked)
	{
	price=price+200;
 	}
	if(item4.checked)
	{
	price=price+300;
	}

document.getElementById("result1").innerHTML="Hi "+name+"<br>"+"Please pay total Amount :"+price;
}

function call2(){

var rates = document.getElementById('rates').value;
var rate_value;
if(rates =='Fixed Rate'){
    rate_value = document.getElementById('r1').value;

}else if(rates =='Variable Rate'){
    rate_value = document.getElementById('r2').value;

}else if(rates =='Multi Rate'){
    rate_value = document.getElementById('r3').value;
}

document.getElementById('res').innerHTML = rate_value;
}


function js(){
var form = document.getElementById("test2");
alert(form.elements["test2"].value);
}
</script>
</head>
<body>

<form id="test">
<label><input type="radio" id="test2" name="test2" value="A"> A</label>
<label><input type="radio" id="test2" name="test2" value="B" checked> B</label>
<label><input type="radio" id="test2" name="test2" value="C"> C</label>
<input type="button" onclick="js()" value="click">
</form>


<div id="rates">
  <input type="radio" id="r1" name="rate" value="Fixed Rate"> Fixed Rate
  <input type="radio" id="r2" name="rate" value="Variable Rate"> Variable Rate
  <input type="radio" id="r3" name="rate" value="Multi Rate" checked="checked"> Multi Rate
  <input type="button" value="name" onclick="call2()">
</div>
<p id="res"></p>

<hr></hr>
<form>
<div align="center">
<table border="1">
<tr><td>Name :</td><td><input type="text" id="uname" name="uname"></td></tr>
<tr><td colspan="2">select your favirate food item</td></tr>
<tr><td>food item 1(&#8377;100/-)<input type="radio" value="item1" id="item1" name="item1" ></td><td>food item 2(&#8377;150/-)<input type="radio" value="item2" id="item2" name="item1"></td></tr>
<tr><td colspan="2">select ad-on</td></tr>
<tr><td><input type="checkbox" id="item3" value="Krusher" >Krushere (&#8377;200/-) </td><td><input type="checkbox" id="item4" value="fries" >fries(&#8377;300/-) </td></tr>
<tr><td colspan="2" align="center" ><input type="button" value="order" onclick="order()"></td></tr>
<tr><td colspan="2" align="center" id="result1"></td></tr>

</table>
</form>
<div id="st">
</div>


<hr></hr>
<div align="center"><br>
<input type="text" id="n1" placeholder="enter n1">
<input type="text" id="n2" placeholder="enter n2">
<input type="button" onclick="load()" value="test">&nbsp <span id="sum"></span><span id="mul"></span>

</div><br>
<div align="center">
Enter Your Pin<input type="text" id="pin">
<input type="button" onclick="pin()" value="start">
<span id="er"></span>
</div>
<hr></hr>
<div align="center">
<form>
<table>
<caption>Payment gatway</caption>
<tr><td>Enter pin :</td><td><input type="text" id="pin2" placeholder="enter pin"></td></tr>
<tr><td>Exp.Date:</td><td><select id="date">
<option value="2017">2017</option>
<option value="2018">2018</option>
<option value="2019">2019</option>
</select></td></tr>
<tr><td>csv:</td><td><input type="text" id="csv" placeholder="enter pin"></td></tr>
<tr><td colspan="2"><div id="status" align="center"></div></td></tr>
<tr align="center"><td colspan="2"><input type="button" value="pay now" onclick="pay()"></td></tr>
</table>

</form>
</div>


<!--Statements
programe instraction that controls the application flow and performs specific operations
1.selecttion statements ->if,else,switch,case
2.Iteration statements ->for,while,do while
3.jump statements-> break,continue,return
4.Exception Handling statements->try ,catch,finally,throw


if -block
else -clause(alternative statements)

selection statements are desition making statements controls programe exicution

==>if
1.forword jump
 if(boolen jump)
 statement1;
 statement2;//not belongs to if condtion

2.simple forword jump with block representation

if(boolen expresstion)
{
statement1;
statement2;
}

3.simple if

if(boolen expression){
statements;
statements2;
}else{
statemnets3;
statemnets4;
}

4.else if
if(expresstion)
{
statement1;
}
else if(express0ion){
statements2;
}
else{
statements;
}


multilelev lader if


kfc simple online order form


function orderclick()
{
uname=document.getElementById("txtName").value;
burger=document.getElementById("optBurger").value;
roller=document.getElementById("optroller").value;
krusher=document.getElementById("optkruser").value;
fries=document.getElementById("optfries");
summary=document.getElementById("optBurger");

if(burger.checked)
{
mealcost=120;
mealname=burger.value;
}
if(roller.checked)
{
mealcost=100;
mealname=roller.value;
}
if(krusher.chaked)
{
acost=40;
mealcost=mealcost+acost;
}
if(fries.checked)
{
acost=60;
mealcost=mealcost+acost;
}
summary.innerHTML="hellow!"+uname+"<br>"+"bill :"+"&#8377"+mealcost;

<form>
<font size="5" color="white">
<table align="center border="1" bgcolor="marron">
<caption><caption>
<tr> <td colspan="2" align="center"> cusmer info</td></tr>
<tr> <td> name</td><td> <input type="ntext" id="uname"></td></tr>

<tr> <td colspan="2" align="center"> select meal</td></tr>
<tr> <td> <input type"radio" id="optburger" name="meal" value="OMG burger">OMG burger(&#8377)</td><td><input type"radio" id="optroller" name="meal" value="OMG roller">OMG rolle(&#8377)</td></tr>

</table>

</form>

}


-->


</body>
</html>