day1code.log

var x;
undefined
x = 10;
10
typeof x;
'number'
typeof undefined;
'undefined'
a=10.20;
10.2
typeof undefined;
'undefined'
typeof a;
'number'
a=1;
1
typeof a;
'number'
a=1111111111111;
1111111111111
typeof a;
'number'
a = 10 /0;
Infinity
typeof a;
'number'
a= 10- "ten";
NaN
a + 1000;
NaN
isNaN(a);
true
isNaN(a)?0:a;
0
a = 10/0;
Infinity
isFinite(a);
false
isFinite(a)?a:0;
0
a= "100";
'100'
a + 200;
'100200'
parseInt(a) + 200;
300
parseFloat("100.20") + 20;
120.2
a;
'100'
a + 100;
'100100'
parseInt(a) + 200;
300
a - 10;
90
a - "ten"
NaN
a * 10;
1000
a;
'100'
a**3;
1000000
a = 'Amit';
'Amit'
typeof a;
'string'
a = "Amit";
'Amit'
typeof a;
'string'
a=`gdfgkljdfglkf
ghdkj
ghdsjkf
fhgskdj`;
'gdfgkljdfglkf\nghdkj\nghdsjkf\nfhgskdj'
console.log(a);
VM986:1 gdfgkljdfglkf
ghdkj
ghdsjkf
fhgskdj
undefined
typeof console;
'object'
typeof console.log
'function'
var x = 10;
undefined
var y = 20;
undefined
`X is ${x} and y is ${y}`; // String Interpolation
'X is 10 and y is 20'
var att =true;
undefined
typeof att;
'boolean'
a = 'amit';
'amit'
a.toUpperCase();
'AMIT'
var age = 21;
undefined
typeof age;
'number'
var amit = {id:1001, name:};
VM1404:1 Uncaught SyntaxError: Unexpected token '}'
var amit = {id:1001, name:'Amit', address:'Delhi'};
undefined
typeof amit;
'object'
var temp = [10,20,30,40,11, 22,44,21,20];
undefined
temp[0];
10
temp[1];
20
var temp = {'delhi':43, 'mumbai':33};
undefined
temp['delhi'];
43
var temp = [10,20,30,40,11, 22,44,21,20];
undefined
typeof temp;
'object'
var e = {id:1001, name:}
VM1751:1 Uncaught SyntaxError: Unexpected token '}'
var e = {id:1001, name:'Amit'};
undefined
typeof e;
'object'
var x = [10,20];
undefined
var y = x;
undefined
y;
(2) [10, 20]
x;
(2) [10, 20]
y[0] = 1000;
1000
y;
(2) [1000, 20]
x;
(2) [1000, 20]
var t = "Amit";
undefined
typeof t;
'string'
var s = [10,20];
undefined
s = null;
null
var a= 10;
undefined
a = null;
null
typeof (a);
'object'
typeof a;
'object'
a= 10;
10
b = "10";
'10'
a==b;
true
a===b;
false