diff --git a/1.js b/1.js
new file mode 100644
index 0000000000000000000000000000000000000000..9e7ba85beff75dd75caeeefff9b459d462a22bfa
--- /dev/null
+++ b/1.js
@@ -0,0 +1,11 @@
+function maxx(a,b)
+{
+	if (a<b){
+		return(b);
+	}else{
+		return(a);
+	}
+}
+
+let re = maxx(9,7);
+alert(re)
\ No newline at end of file
diff --git a/2.js b/2.js
new file mode 100644
index 0000000000000000000000000000000000000000..89d2b91fd20957dd8367195738d514b459b5c819
--- /dev/null
+++ b/2.js
@@ -0,0 +1,40 @@
+/* 2. 创建一个函数用以判断一个数字是否是质数。例如：给函数传递参数5，返回true；给定函数4，返回false。（什么是质数请自行查找资料） */
+
+let num;
+
+function sush(num)
+{	
+	if(num == 1){
+		console.log(num);
+	}else{
+		let i=2;
+		while(i<num){
+			if(num%i!=0){
+				i=i+1;
+				/* console.log('---------'); */
+			}else if(i==num){
+				console.log(i);
+				break;
+			}else{
+				break;
+			}
+		}
+	}
+}
+
+let n=1;
+while(n<=100){
+	sush(n);
+	n=n+1;
+}
+
+	/* console.log(sush(i)); */
+	/* console.log(i) */
+
+
+/* let i = 10;
+while(i>=1 && i<=10){
+	console.log(i);
+	i-=1;
+}
+ */
\ No newline at end of file
diff --git a/4.js b/4.js
new file mode 100644
index 0000000000000000000000000000000000000000..7899a8a74827a9691f573ed1cdf9b5f4fa58143b
--- /dev/null
+++ b/4.js
@@ -0,0 +1,16 @@
+/* 4. 创建一个函数，用以找到三个数中最大的数并返回。例如：给函数传递参数6、4、5，返回6。 */
+
+function max(a,b,c)
+{
+	if (a>b){
+		max=a;
+	}else{
+		max=b
+	}
+	if (max<c){
+		max=c
+	}
+return max
+}
+
+alert(max(6,4,5))
\ No newline at end of file
diff --git a/5.js b/5.js
new file mode 100644
index 0000000000000000000000000000000000000000..08a1a542ddd096ba65bd4dcbf6842372c45171d5
--- /dev/null
+++ b/5.js
@@ -0,0 +1,12 @@
+/* 5. 创建一个函数用以判断一个数字是否是水仙花数。例如：给函数传递参数153，返回true。（什么是水仙花数请自行查找资料） */
+let i = 99;
+while(i<=999)
+{
+	n1 = i%10;
+	n2 = (i%100-n1)/10;
+	n3 = (i - (i%100))/100;
+	sum = (n1*n1*n1)+ (n2*n2*n2)+ (n3*n3*n3);
+	if (sum == i){
+		console.log(sum);}
+	i+=1;
+}
\ No newline at end of file
diff --git a/6.js b/6.js
new file mode 100644
index 0000000000000000000000000000000000000000..1c9f4b96b12b1103783bbeb6cfb92f335aaea5d7
--- /dev/null
+++ b/6.js
@@ -0,0 +1,17 @@
+/* 6. 创建一个函数，运用第5题的函数找到给定区间内的所有水仙花数。 */
+let a,b;
+function ShuiXianHua(a,b)
+{
+	let i = a;
+	while(i<=b)
+	{
+		n1 = i%10;
+		n2 = (i%100-n1)/10;
+		n3 = (i - (i%100))/100;
+		sum = (n1*n1*n1)+ (n2*n2*n2)+ (n3*n3*n3);
+		if (sum == i){
+			console.log(sum);}
+		i+=1;
+	}
+}
+ShuiXianHua(100,400);
\ No newline at end of file