식="3.141592"
초기화 불러오기.
검사
v1==3
s2==false
s3==false
검사1
s1==true
s2==true
검사2
v1==3
j==1
s2==true
+(식.substr(i,1))==1}}}
this['v'+j]==3.1
this['v'+j]==3.14
this['v'+j]==3.141
j==1
this.v1==3.1415
j==1
s1==true, s2==true
v1>3.14159
v1<3.141595
v1==3.141592