[JavaScript] 변수 연습문제 풀이

연습문제1)

 

    <script>
        document.write("Hello JavaScript!");  
    </script>

 

출력

 

연습문제2)

 

    <script>
        document.write("My New JS file!","<br>");  
        document.write("Hello JavaScript!");  
    </script>

 

출력2

 

연습문제3)

 

    <script>
        var str1="송중기";
        var age=20;
        var height=178.5;
        
        document.write("이름:"+str1,"<br>");  
        document.write("나이:"+age,"<br>");  
        document.write("키:"+height);  
    </script>

 

출력3

 

연습문제4)

 

    <script>
      var num1=9;
      var num2=2;
   
    document.write(num1+"+"+num2+"="+(num1+num2),"<br>");
    document.write(num1+"-"+num2+"="+(num1-num2),"<br>");   
    document.write(num1+"*"+num2+"="+(num1*num2),"<br>");   
    document.write(num1+"/"+num2+"="+(num1/num2),"<br>");   
    document.write(num1+"%"+num2+"="+(num1%num2),"<br>");      


    </script>

 

출력4

 

연습문제5)

 

    <script>
     var num1=20;
     var num2=10;
     var result=0;

     result=num1>=num2;
     document.write(num1+">="+num2+"의 결과?:"+result,"<br>");

     result=num1==num2;
     document.write(num1+"=="+num2+"의 결과?:"+result);
    </script>

 

출력5