Why is such result ?

Question

var x=0;
var y=0;
do{
y++;
}
while(x<0)
document.write(y);

x<0 this false. so do function not working and must y=0 . but output y=1

Answer 1

/*U wrong Bro...
"do while " Loop will execute your statement in do block for first and it check ur condition for second...I pointed with two step in lower program you gave...*/

var x=0;
var y=0;
do{
y++;
//First Step- In this state the condition isn't check yet and it'll change y value to 1.
}
while(x<0)
*/Second Step-Checked the condition and it failed. So, It won't execute the statement between do block for second time and looping is over...*/
document.write(y);

Answer 2

now İ understand. thank you.