JavaScript循環構造例問題(do{}.which();for(){}

	var n=0;
			var sum=0;
			while(n<100){
				n++;
				sum+=n;
				document.write(n+'
')
			}
			document.write('1-100     :'+sum+'
')//5050

			var n01=0;
			var sum01=0;//   
			while(n01<100){
				n01++;
				if (n01%2==0){
					sum01+=n01;//sum01=sum01+n01;
					document.write(n01+'
')					
				}
			}
			document.write('1-100      '+sum01+'
');//2550

			var n02=0;
			while ( n02<100){
				n02++;
				if (n02%7==0) {
					document.write(n02+'
')
				}
			}

			var n03=0;
			var sum03=0;
			while (n03<100){
				n03++;
				if (n03%2!=0){   //n03%2==1
					sum03+=n03;
					document.write(n03+'
');
				}
			}
			document.write('1-100       :'+sum03+'
');//2500

		var n001=0;
			var sum001=0;
			do{
				n001++;
				if (n001%3==0){
					sum001+=n001;  //    
					document.write(n001+'
');
				}
			}while(n001<100);
			document.write('1-100   3      :'+sum001+'
');//1683

			do{
				var tex=prompt('     ?y/n');
			}while(tex!='y');
			alert('      ');

		for (var i=1;i<=100;i++) {
			document.write(i+'
');
		}

			var sum0=0;
		for (var i=1;i<=100;i++) {
			sum0+=i;
		}
		document.write('1-100        :'+sum0/100);//50.5

		var sum1=0;
		var sum2=0;
		for (var i=1;i<=100;i++) {
			if (i%2==0) {
				//document.write('
'+i);
				sum1+=i;
			}
			if(i%2!=0){
				sum2+=i;
			}
		}
	document.write('
'+'1-100       :'+sum1+'
');//2550
	document.write('1-100       :'+sum2+'
');//2500

			var cheng=1;
			for (var i=1;i<=100;i++) {
				cheng*=i;
			}
			document.write('1-100     :'+cheng+'
');
				//9.33262154439441e+157

			var  sum00=0;
			for (var i=1;i<=100;i++) {
				if (i%2!=0) {
					sum00+=i;
				}
			}
		document.write('1-100         :'+sum00+'
');//2500

			var sum01=0;
			for (var i=1;i<=100;i++) {
				if (i%3==0) {
					sum01+=i;
				}
			}
	document.write('1-100    3      :'+sum01+'
');//1683

	var sum02=0;
			for (var i=1;i<=100;i++){
				if (i%7!=0) {
					sum02+=i;
				}
			}
	document.write('1-100     7      :'+sum02+'
');//4315