upto two decimal digit calculator using javascript
<title>Two Digit Calculator</title> <script language="JavaScript"> var p=0,k='',l='',m='',n='',o='',s=0,a,b,c,dd,e; function reseter() { p=0;} function writer(x) { if(x!=20) { p++; switch(p) { case 1: a=x; if(a==10) {document.f1.d.value='+'; k='+';} else if(a==11) {document.f1.d.value="-"; k='-' } else if(a==12) {document.f1.d.value="*"; k='*';} else if(a==13) {document.f1.d.value="/"; k='/';} else if(a==0.1) {document.f1.d.value="."; k='.';} else {document.f1.d.value=a; k=a;} break; case 2: b=x; if(b==10) {document.f1.d.value=k+"+"; l='+';} else if(b==11) {document.f1.d.value=k+'-'; l='-';} else if(b==12) {document.f1.d.value=k+"*"; l='*';} else if(b==13) {document.f1.d.value=k+"/"; l='/';} else if(b==0.1) {document.f1.d.value=k+"."; l='.';} else {document.f1.d.value=k+""+b; l=b;} break; case 3: c=x; if(c==10) {document.f1.d.value=k+""+l+'+'; m='+'; } else if(c==11) {document.f1.d.value=k+""+l+"-";m='-';} else if(c==12) {document.f1.d.value=k+""+l+"*";m='*';} else if(c==13) { document.f1.d.value=k+""+l+"/";m='/';} else if(c==0.1) {document.f1.d.value=k+""+l+".";m='.';} else { document.f1.d.value=k+''+l+''+c;m=c;} break; case 4: dd=x; if(dd==10) {document.f1.d.value=k+""+l+''+m+'+'; n='+'; } else if(dd==11) {document.f1.d.value=k+""+l+""+m+"-";n='-';} else if(dd==12) {document.f1.d.value=k+""+l+""+m+"*";n='*';} else if(dd==13) { document.f1.d.value=k+""+l+""+m+"/";n='/';} else if(dd==0.1) {document.f1.d.value=k+""+l+""+m+".";n='.';} else { document.f1.d.value=k+''+l+''+m+""+dd;n=dd;} break; case 5: e=x; if(e==10) {document.f1.d.value=k+''+l+''+m+''+n+'+'; o='+';} else if(e==11) {document.f1.d.value=k+''+l+''+m+''+n+'-'; o='-';} else if(e==12) {document.f1.d.value=k+''+l+''+m+''+n+'*';o='*';} else if(e==13) {document.f1.d.value=k+''+l+''+m+''+n+'/'; o='/';} else if(e==0.1) {document.f1.d.value=k+''+l+''+m+''+n+'.';o='.';} else document.f1.d.value=k+''+l+''+m+''+n+''+e; o=e; break; }} else {if(p>2) { if(p==3) {if(a<10 && c<10) {if(b>9) switch(b) {case 10: s=a+c; document.f1.d.value=s; break; case 11: s=a-c; document.f1.d.value=s; break; case 12: s=a*c; document.f1.d.value=s; break; case 13: s=a/c; document.f1.d.value=s; break; } } } if(p==4) {if(a<10 && b>9 && c<10 && dd<10 && a!=0.1) {cal=c*10+dd; switch(b) {case 10: s=a+cal; document.f1.d.value=s; break; case 11: s=a-cal; document.f1.d.value=s; break; case 12: s=a*cal; document.f1.d.value=s; break; case 13: s=a/cal; document.f1.d.value=s; break; } } if(a<10 && b<10 && c>9 && dd<10 && a!=0.1) {cal=a*10+b; switch(c) {case 10: s=cal+dd; document.f1.d.value=s; break; case 11: s=cal-dd; document.f1.d.value=s; break; case 12: s=cal*dd; document.f1.d.value=s; break; case 13: s=cal/dd; document.f1.d.value=s; break; } } } if(p==5) {if(a<10 && b>9 && c<10 && dd<10 && e<10 && a!=0.1) { if(c!=0.1 && dd!=0.1 && e!=0.1) { cal=c*100+dd*10+e;} else if(c==0.1 && dd!=0.1 && e!=0.1) { cal=(dd*10+e)/100;} else if( c!=0.1 && dd==0.1 && e!=0.1) {cal=(c*10+e)/10;} else {cal=c*10+dd;} switch(b) {case 10: s=a+cal; document.f1.d.value=s; break; case 11: s=a-cal; document.f1.d.value=s; break; case 12: s=a*cal; document.f1.d.value=s; break; case 13: s=a/cal; document.f1.d.value=s; break; } } if(a<10 && b<10 && c>9 && dd<10 && e<10) { if(a!=0.1 && b!=0.1) {cal=a*10+b;} else if(a==0.1 && b!=0.1) {cal=b/10;} else if(b==0.1 && a!=0.1) {cal=a;} if(dd==0.1) {cal1=e/10;} else if(e==0.1 && dd!=0.1) {cal1=dd;} else {cal1=dd*10+e;} switch(c) {case 10: s=cal+cal1; document.f1.d.value=s; break; case 11: s=cal-cal1; document.f1.d.value=s; break; case 12: s=cal*cal1; document.f1.d.value=s; break; case 13: s=cal/cal1; document.f1.d.value=s; break; } } if(a<10 && b<10 && c<10 && dd>9 && e<10 && e!=0.1) { if(a==0.1 && b!=0.1 && c!=0.1) {cal=(b*10+c)/100;} else if(a!=0.1 && b==0.1 && c!=0.1) {cal=(a*10+c)/10;} else if(a!=0.1 && b!=0.1 && c==0.1) {cal=a*10+b;} else cal=a*100+b*10+c; switch(dd) {case 10: s=cal+e; document.f1.d.value=s; break; case 11: s=cal-e; document.f1.d.value=s; break; case 12: s=cal*e; document.f1.d.value=s; break; case 13: s=cal/e; document.f1.d.value=s; break; } } } }}} </script>| The Javascript Calculator | ||||||||||||||||||||||||