新建题库01030857

Var a=2;

switch (a) {

case 1: alert("1");

case 2: alert ("2");

case 3: alert("3");

default: alert('4');  }

var a=0, b=0;

for (;a<10,b<7;a++,b++) {

g=a+b;

}

console. log(g);""

fot(var i=0;i<=30;i+=5) {

if(i%3==0){ continue; }

console.log(i);

}

var str="I am a teacher";

a=str.charAt (9) ;

document .write(a);