இட்டதோர் தாமரைப்பூ
இதழ் விரித்திருத்தல் போலே
வட்டமாய் புறாக்கள் கூடி
இரையுண்ணும்; அவற்றின் வாழ்வில்
வெட்டில்லை; குத்துமில்லை;
வேறுவேறு இருந்து அருந்தும்
கட்டில்லை; கீழ்மேல் என்னும்
கண்மூடி வழக்கம் இல்லை!
Thursday 20 July 2017
Thursday 25 May 2017
...Family...
Unnodu Vaazhntha Kaalangal Yaavum Kanavaai Ennai Mooduthadi
Nerupaalum Mudiyathamma Ninaivugalai Azhipatharku Unnakaga Kathirpen
Wednesday 10 May 2017
String Object
<!DOCTYPE html>
<html>
<body>
<h2>Never Create Strings as objects.</h2>
<p>Strings and objects cannot be safely compared.</p>
<p id="demo1"></p>
<p id="demo2"></p>
<p id="demo3"></p>
<p id="demo4"></p>
<p id="demo5"></p>
<script>
var x = "John"; // x is a string
var y = new String("John"); // y is an object
document.getElementById("demo1").innerHTML = (x==y)+'<br>becz equal value';
var x = "John"; // x is a string
var y = new String("John"); // y is an object
document.getElementById("demo2").innerHTML = (x===y)+'<br>not equal becz one is string anothe is object';
var x = new String("John");
var y = new String("John");
document.getElementById("demo3").innerHTML = (x==y)+'<br>different object';
document.getElementById("demo4").innerHTML = "Hello" +
"Dolly!";
</script>
</body>
</html>
<html>
<body>
<h2>Never Create Strings as objects.</h2>
<p>Strings and objects cannot be safely compared.</p>
<p id="demo1"></p>
<p id="demo2"></p>
<p id="demo3"></p>
<p id="demo4"></p>
<p id="demo5"></p>
<script>
var x = "John"; // x is a string
var y = new String("John"); // y is an object
document.getElementById("demo1").innerHTML = (x==y)+'<br>becz equal value';
var x = "John"; // x is a string
var y = new String("John"); // y is an object
document.getElementById("demo2").innerHTML = (x===y)+'<br>not equal becz one is string anothe is object';
var x = new String("John");
var y = new String("John");
document.getElementById("demo3").innerHTML = (x==y)+'<br>different object';
document.getElementById("demo4").innerHTML = "Hello" +
"Dolly!";
</script>
</body>
</html>
js variable
<!DOCTYPE html>
<html>
<body>
<h2>JavaScript typeof</h2>
<p>The typeof operator returns the type of a variable or an expression.</p>
<p id="demo"></p>
<script>
var a="hai";
var b=4;
var c;
var d=null;
document.getElementById("demo").innerHTML =
typeof a +' a=hai'+'<br>'+
typeof d +' d=null is treated as object'+'<br>'+
typeof b +' b=4'+'<br>'+ typeof c +' just var c'+'<br>'+
typeof true +' typeof true'+'<br>'+
typeof [1,2,3,4] +' typeof [1,2,3,4] '+'<br>'+
typeof {name:'john', age:34} + '<br>'+
typeof function myFunc(){}+' typeof function myFunc(){} '+'<br>'+
(null === undefined) + "<br>" +
(null == undefined);
</script>
</body>
</html>
<!--
10 == Equal x == y
10 === Strict equal x === y
10 != Unequal x != y
10 !== Strict unequal x !== y
-->
<html>
<body>
<h2>JavaScript typeof</h2>
<p>The typeof operator returns the type of a variable or an expression.</p>
<p id="demo"></p>
<script>
var a="hai";
var b=4;
var c;
var d=null;
document.getElementById("demo").innerHTML =
typeof a +' a=hai'+'<br>'+
typeof d +' d=null is treated as object'+'<br>'+
typeof b +' b=4'+'<br>'+ typeof c +' just var c'+'<br>'+
typeof true +' typeof true'+'<br>'+
typeof [1,2,3,4] +' typeof [1,2,3,4] '+'<br>'+
typeof {name:'john', age:34} + '<br>'+
typeof function myFunc(){}+' typeof function myFunc(){} '+'<br>'+
(null === undefined) + "<br>" +
(null == undefined);
</script>
</body>
</html>
<!--
10 == Equal x == y
10 === Strict equal x === y
10 != Unequal x != y
10 !== Strict unequal x !== y
-->
js variable
<!DOCTYPE html>
<html>
<body>
<!--
vist this site for artimetic options
https://www.w3schools.com/js/js_arithmetic.asp
vist this site for assignment of operators
https://www.w3schools.com/js/js_assignment.asp
-->
<h2>JavaScript Variables</h2>
<p>The result of adding 2 + 3 </p>
<p id="demo1a"></p>
<p>just declearing the var y; then print y it will display as undefined</p>
<p id="demo1b"></p>
<p>The result of adding "5"+ 2 + 3 if first oprand to be added as string then treat all the following oprand as string</p>
<p id="demo2"></p>
<p>The result of adding 2 + 3 + "5":</p>
<p id="demo3"></p>
<p>string concatination methode 1</p>
<p id="demo4"></p>
<p>string concatination methode 2</p>
<p id="demo5"></p>
<p>string concatination methode 3</p>
<p id="demo6"></p>
<script>
var x = 2 + 3 ;
var y;
document.getElementById("demo1a").innerHTML = x;
document.getElementById("demo1b").innerHTML = y;
var x = "5"+ 2 + 3 ;
document.getElementById("demo2").innerHTML = x;
var x = 2 + 3 +"5" ;
document.getElementById("demo3").innerHTML = x;
var fn="vishnu"+" "+"yardini";
document.getElementById("demo4").innerHTML=fn;
var fn="vishnu",ln="yardini";
document.getElementById("demo5").innerHTML=fn+" " + ln;
var txt1 = "What a very ";
txt1 += "nice day";
document.getElementById("demo6").innerHTML = txt1;
</script>
</body>
</html>
<html>
<body>
<!--
vist this site for artimetic options
https://www.w3schools.com/js/js_arithmetic.asp
vist this site for assignment of operators
https://www.w3schools.com/js/js_assignment.asp
-->
<h2>JavaScript Variables</h2>
<p>The result of adding 2 + 3 </p>
<p id="demo1a"></p>
<p>just declearing the var y; then print y it will display as undefined</p>
<p id="demo1b"></p>
<p>The result of adding "5"+ 2 + 3 if first oprand to be added as string then treat all the following oprand as string</p>
<p id="demo2"></p>
<p>The result of adding 2 + 3 + "5":</p>
<p id="demo3"></p>
<p>string concatination methode 1</p>
<p id="demo4"></p>
<p>string concatination methode 2</p>
<p id="demo5"></p>
<p>string concatination methode 3</p>
<p id="demo6"></p>
<script>
var x = 2 + 3 ;
var y;
document.getElementById("demo1a").innerHTML = x;
document.getElementById("demo1b").innerHTML = y;
var x = "5"+ 2 + 3 ;
document.getElementById("demo2").innerHTML = x;
var x = 2 + 3 +"5" ;
document.getElementById("demo3").innerHTML = x;
var fn="vishnu"+" "+"yardini";
document.getElementById("demo4").innerHTML=fn;
var fn="vishnu",ln="yardini";
document.getElementById("demo5").innerHTML=fn+" " + ln;
var txt1 = "What a very ";
txt1 += "nice day";
document.getElementById("demo6").innerHTML = txt1;
</script>
</body>
</html>
js statement
<html>
<head>
<script>
function myFunction1()
{ var a=10;
var b=20;
var c=a+b;
document.getElementById("para2").innerHTML=c;
}
function myFunction2()
{
document.getElementById("para3").innerHTML="this is for para 3 after change belong to same function";
document.getElementById("para4").innerHTML="this is for para 4 after change belong to same function";
}
</script>
</head>
<body>
<p id='para1'>this is the para 1 b4 change</p>
<button type='button' onClick="document.getElementById('para1').innerHTML='para 1 after change'"> para 1 </button>
<p id='para2'>this is the para 2 b4 change</p>
<button type='button' onClick='myFunction1()'> para 2 </button>
<p id='para3'>this is the para 3 b4 change</p>
<button type='button' onClick="myFunction2()"> para 3 </button>
<p id='para4'>this is the para 4 b4 change</p>
<button type='button' onClick="myFunction2()"> para 4</button>
</body>
</html>
<head>
<script>
function myFunction1()
{ var a=10;
var b=20;
var c=a+b;
document.getElementById("para2").innerHTML=c;
}
function myFunction2()
{
document.getElementById("para3").innerHTML="this is for para 3 after change belong to same function";
document.getElementById("para4").innerHTML="this is for para 4 after change belong to same function";
}
</script>
</head>
<body>
<p id='para1'>this is the para 1 b4 change</p>
<button type='button' onClick="document.getElementById('para1').innerHTML='para 1 after change'"> para 1 </button>
<p id='para2'>this is the para 2 b4 change</p>
<button type='button' onClick='myFunction1()'> para 2 </button>
<p id='para3'>this is the para 3 b4 change</p>
<button type='button' onClick="myFunction2()"> para 3 </button>
<p id='para4'>this is the para 4 b4 change</p>
<button type='button' onClick="myFunction2()"> para 4</button>
</body>
</html>
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