JavaScript (language script), for loop practice

i++; equivalent to i=i+1;
++i; equivalent to i=i+1;

Example One,

var a=0;
var b=a++;
var b =a;
a=a+1;
alert (b);

a++ give a B, b=0, and then + +
++a + +, then assign a to B

for (Var i=0;i<10;i++)
{
alert (i);
}
★ Perform initial value first-condition judgment--loop body--state change--condition judgment--loop body--State change ...


example Two, an odd number and an even number within 100 input

var odd = "";
var even = "";

for (Var i=1;i<100;i++)
{
if (i%2==0)
{
even = even +i+ "|";
}
Else
{
Odd = Odd +i+ "|"
}
}
alert (even);
alert (odd);


example Three, take 100 or 7 related numbers
var s= "";
for (i=0;i<100;i++)
{
if (i%7==0 | | i%10==7 | | parseint (I/10) ==7)
{
s=s+i+ "|";
}
}

alert (s);


example Four,Sum of numbers within 100
var a=0;
for (Var i=0;i<100;i++)
{
A=a+i;
}
alert (a);


example Five,Ask for factorial within 10
var a=1;
for (i=1;i<10;i++)
{
A=a*i;
}
alert (a);

example Six,Output multiplication Table
var a= "";
for (var i=1; i<10; i++)
{
for (var b=1; b<10; b++)
{
if (b>=i)
{
var s=i*b;
a=a+i+ "X" +b+ "=" +s+ "|";
}
}
}
alert (a);


Homework One,The thickness of a piece of paper is 0.0001 meters, fold the paper, fold how many times the thickness exceeds the height of Everest 8848 meters
var hd=0.0001;
var cs=0;
while (true)
{
cs++;
HD =hd*2;
if (hd>8848)
{
Break
}
}
Alert (CS);


Homework Two,Badminton Racket 15 Yuan, the ball 3 yuan, the water 2 yuan. $200 each at least one, how much could it be
15*13=200;3*66=200;2*100=200;
X y Z
var kn= "";
var cs=0;
for (Var x=1;parseint (x*15)<=200;x++)
{
for (Var Y=1;parseint (y*3)<=200;y++)
{
for (Var z=1;parseint (z*2)<=200;z++)
{
cs++;
kn=kn+x+ "multiplied by" +15+y+ "multiplied by" +3+z+ "multiplied by" +2+ "less than" + "equals" +200;
if (x*15+y*3+z*2>200)
{
Break
}
}
}

}
Alert (CS);
Homework Three,

Pooled 1,2,5 20 Yuan money how many possible
1*20=20;2*10=20;5*4=20;
X y Z
var kn= "";
var cs=0;
for (Var x=1;x*1<=20;x++)
{
for (Var y=1;y*2<=20;y++)
{
for (Var z=1;z*5<=20;z++)
{
cs++;
kn=kn+x+ "multiplied by" +1+y+ "multiplied by" +2+z+ "multiplied by" +5+ "less than" + "equals" +20;
if (x*1+y*2+z*5>20)
{
Break
}
}
}
}
Alert (CS);

JavaScript (language script), for loop practice