JavaScript 三

do ... while loop

do {
  Statement
} The while (condition);

-------------

the while (condition) {
      Statements;
}

break and continue statements

break out of block

When the cycles continue Jumps

break statement and continue statement without parameters only for the innermost loop

<Label> tag

top :for(var i=0;i<10;i++){
    if(i == 9){
        break bottom;
    }
}


bottom:
    console.log('this is bottom');

Basic data types:

 

Digital contain (integer and floating point)

There are a = 1,213 ;

 

Quoted string "Content" 'Content'

was $ hello = ' abc ' ;

Boolean true and false true and false

var a = true;  or var a = 0 or ""

null null

There are a = '' ;

undefine undefined

There are a;

object - array array

There ar = array ( ' asd ' , ' sdsd ' );
There ArR 1 = [ ' 123 ' , ' abc ' ];

function method

function funname( var a;){
  console.log(a);
}
There are x = 10 ;
funname(x);

typeof operator

alert(typeof(a3));


if(typeof(a3)  == 'boolean'){
    Alert ( ' I'm a Boolean value ' );
}


1.0^5