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Why is NodeJS not calculating the value?
How to make a function wait until a callback has been called using node.jsHow can I update NodeJS and NPM to the next versions?How to run a hello.js file in Node.js on windows?What is this Javascript “require”?How do I completely uninstall Node.js, and reinstall from beginning (Mac OS X)NodeJS - What does “socket hang up” actually mean?Unexpected results when working with very big integers on interpreted languagestypescript getting error TS2304: cannot find name ' require'Babel 6 regeneratorRuntime is not definedHow, in general, does Node.js handle 10,000 concurrent requests?
.everyoneloves__top-leaderboard:empty,.everyoneloves__mid-leaderboard:empty,.everyoneloves__bot-mid-leaderboard:empty margin-bottom:0;
I am trying to get this simple console Node.js calculator to work, but it just won't return any value. Any insight into what I'm doing wrong?
console.log(process.argv);
var x = 0;
if (process.argv[4]==="+"||process.argv[4]==="plus")x=parseInt(process.argv[3])+parseInt(process.argv[5])
if (process.argv[4]==="-"||process.argv[4]==="minus")x=parseInt(process.argv[3])-parseInt(process.argv[5])
if (process.argv[4]==="*"||process.argv[4]==="times")x=parseInt(process.argv[3])*parseInt(process.argv[5])
if (process.argv[4]==="/"||process.argv[4]==="over")x=parseInt(process.argv[3])/parseInt(process.argv[5])
console.log(x);
node.js
asked Mar 26 at 3:38
OlegArsyonovOlegArsyonov
4681 gold badge4 silver badges14 bronze badges
add a comment |
I am trying to get this simple console Node.js calculator to work, but it just won't return any value. Any insight into what I'm doing wrong?
console.log(process.argv);
var x = 0;
if (process.argv[4]==="+"||process.argv[4]==="plus")x=parseInt(process.argv[3])+parseInt(process.argv[5])
if (process.argv[4]==="-"||process.argv[4]==="minus")x=parseInt(process.argv[3])-parseInt(process.argv[5])
if (process.argv[4]==="*"||process.argv[4]==="times")x=parseInt(process.argv[3])*parseInt(process.argv[5])
if (process.argv[4]==="/"||process.argv[4]==="over")x=parseInt(process.argv[3])/parseInt(process.argv[5])
console.log(x);
node.js
asked Mar 26 at 3:38
OlegArsyonovOlegArsyonov
4681 gold badge4 silver badges14 bronze badges
add a comment |
I am trying to get this simple console Node.js calculator to work, but it just won't return any value. Any insight into what I'm doing wrong?
console.log(process.argv);
var x = 0;
if (process.argv[4]==="+"||process.argv[4]==="plus")x=parseInt(process.argv[3])+parseInt(process.argv[5])
if (process.argv[4]==="-"||process.argv[4]==="minus")x=parseInt(process.argv[3])-parseInt(process.argv[5])
if (process.argv[4]==="*"||process.argv[4]==="times")x=parseInt(process.argv[3])*parseInt(process.argv[5])
if (process.argv[4]==="/"||process.argv[4]==="over")x=parseInt(process.argv[3])/parseInt(process.argv[5])
console.log(x);
node.js
asked Mar 26 at 3:38
OlegArsyonovOlegArsyonov
4681 gold badge4 silver badges14 bronze badges
I am trying to get this simple console Node.js calculator to work, but it just won't return any value. Any insight into what I'm doing wrong?
console.log(process.argv);
var x = 0;
if (process.argv[4]==="+"||process.argv[4]==="plus")x=parseInt(process.argv[3])+parseInt(process.argv[5])
if (process.argv[4]==="-"||process.argv[4]==="minus")x=parseInt(process.argv[3])-parseInt(process.argv[5])
if (process.argv[4]==="*"||process.argv[4]==="times")x=parseInt(process.argv[3])*parseInt(process.argv[5])
if (process.argv[4]==="/"||process.argv[4]==="over")x=parseInt(process.argv[3])/parseInt(process.argv[5])
console.log(x);
node.js
node.js
asked Mar 26 at 3:38
OlegArsyonovOlegArsyonov
4681 gold badge4 silver badges14 bronze badges
asked Mar 26 at 3:38
OlegArsyonovOlegArsyonov
4681 gold badge4 silver badges14 bronze badges
asked Mar 26 at 3:38
OlegArsyonovOlegArsyonov
4681 gold badge4 silver badges14 bronze badges
asked Mar 26 at 3:38
OlegArsyonovOlegArsyonov
4681 gold badge4 silver badges14 bronze badges
asked Mar 26 at 3:38
OlegArsyonovOlegArsyonov
4681 gold badge4 silver badges14 bronze badges
4681 gold badge4 silver badges14 bronze badges
add a comment |
add a comment |
1 Answer
1
active
oldest
votes
The array indexing on Javascript starts from 0 and not 1. Also it is best to handle divide by zero condition.
console.log(process.argv);
var x = 0;
if (process.argv[3] === "+" || process.argv[3] === "plus")
x = parseInt(process.argv[2]) + parseInt(process.argv[4]);
if (process.argv[3] === "-" || process.argv[3] === "minus")
x = parseInt(process.argv[2]) - parseInt(process.argv[4]);
if (process.argv[3] === "*" || process.argv[3] === "times")
x = parseInt(process.argv[2]) * parseInt(process.argv[4]);
if (process.argv[3] === "/" || process.argv[3] === "over")
x = parseInt(process.argv[2]) / parseInt(process.argv[4]);
console.log(x);
answered Mar 26 at 3:46
PrivateOmegaPrivateOmega
1,2476 silver badges18 bronze badges
Thank you. I should have thought about it!
– OlegArsyonov
Mar 26 at 3:49
1
@OlegArsyonov, did this solve your problem? If yes, kindly accept the answer. Else, state what else or more is needed.
– Rai
Mar 26 at 5:31
@OlegArsyonov instead of all if statements, use if, else if ..... that will be a little more efficient.
– Pankaj Jindal
Mar 26 at 5:53
add a comment |
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1 Answer
1
active
oldest
votes
1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
The array indexing on Javascript starts from 0 and not 1. Also it is best to handle divide by zero condition.
console.log(process.argv);
var x = 0;
if (process.argv[3] === "+" || process.argv[3] === "plus")
x = parseInt(process.argv[2]) + parseInt(process.argv[4]);
if (process.argv[3] === "-" || process.argv[3] === "minus")
x = parseInt(process.argv[2]) - parseInt(process.argv[4]);
if (process.argv[3] === "*" || process.argv[3] === "times")
x = parseInt(process.argv[2]) * parseInt(process.argv[4]);
if (process.argv[3] === "/" || process.argv[3] === "over")
x = parseInt(process.argv[2]) / parseInt(process.argv[4]);
console.log(x);
answered Mar 26 at 3:46
PrivateOmegaPrivateOmega
1,2476 silver badges18 bronze badges
Thank you. I should have thought about it!
– OlegArsyonov
Mar 26 at 3:49
1
@OlegArsyonov, did this solve your problem? If yes, kindly accept the answer. Else, state what else or more is needed.
– Rai
Mar 26 at 5:31
@OlegArsyonov instead of all if statements, use if, else if ..... that will be a little more efficient.
– Pankaj Jindal
Mar 26 at 5:53
add a comment |
The array indexing on Javascript starts from 0 and not 1. Also it is best to handle divide by zero condition.
console.log(process.argv);
var x = 0;
if (process.argv[3] === "+" || process.argv[3] === "plus")
x = parseInt(process.argv[2]) + parseInt(process.argv[4]);
if (process.argv[3] === "-" || process.argv[3] === "minus")
x = parseInt(process.argv[2]) - parseInt(process.argv[4]);
if (process.argv[3] === "*" || process.argv[3] === "times")
x = parseInt(process.argv[2]) * parseInt(process.argv[4]);
if (process.argv[3] === "/" || process.argv[3] === "over")
x = parseInt(process.argv[2]) / parseInt(process.argv[4]);
console.log(x);
answered Mar 26 at 3:46
PrivateOmegaPrivateOmega
1,2476 silver badges18 bronze badges
Thank you. I should have thought about it!
– OlegArsyonov
Mar 26 at 3:49
1
@OlegArsyonov, did this solve your problem? If yes, kindly accept the answer. Else, state what else or more is needed.
– Rai
Mar 26 at 5:31
@OlegArsyonov instead of all if statements, use if, else if ..... that will be a little more efficient.
– Pankaj Jindal
Mar 26 at 5:53
add a comment |
The array indexing on Javascript starts from 0 and not 1. Also it is best to handle divide by zero condition.
console.log(process.argv);
var x = 0;
if (process.argv[3] === "+" || process.argv[3] === "plus")
x = parseInt(process.argv[2]) + parseInt(process.argv[4]);
if (process.argv[3] === "-" || process.argv[3] === "minus")
x = parseInt(process.argv[2]) - parseInt(process.argv[4]);
if (process.argv[3] === "*" || process.argv[3] === "times")
x = parseInt(process.argv[2]) * parseInt(process.argv[4]);
if (process.argv[3] === "/" || process.argv[3] === "over")
x = parseInt(process.argv[2]) / parseInt(process.argv[4]);
console.log(x);
answered Mar 26 at 3:46
PrivateOmegaPrivateOmega
1,2476 silver badges18 bronze badges
The array indexing on Javascript starts from 0 and not 1. Also it is best to handle divide by zero condition.
console.log(process.argv);
var x = 0;
if (process.argv[3] === "+" || process.argv[3] === "plus")
x = parseInt(process.argv[2]) + parseInt(process.argv[4]);
if (process.argv[3] === "-" || process.argv[3] === "minus")
x = parseInt(process.argv[2]) - parseInt(process.argv[4]);
if (process.argv[3] === "*" || process.argv[3] === "times")
x = parseInt(process.argv[2]) * parseInt(process.argv[4]);
if (process.argv[3] === "/" || process.argv[3] === "over")
x = parseInt(process.argv[2]) / parseInt(process.argv[4]);
console.log(x);
answered Mar 26 at 3:46
PrivateOmegaPrivateOmega
1,2476 silver badges18 bronze badges
answered Mar 26 at 3:46
PrivateOmegaPrivateOmega
1,2476 silver badges18 bronze badges
answered Mar 26 at 3:46
PrivateOmegaPrivateOmega
1,2476 silver badges18 bronze badges
answered Mar 26 at 3:46
PrivateOmegaPrivateOmega
1,2476 silver badges18 bronze badges
1,2476 silver badges18 bronze badges
Thank you. I should have thought about it!
– OlegArsyonov
Mar 26 at 3:49
1
@OlegArsyonov, did this solve your problem? If yes, kindly accept the answer. Else, state what else or more is needed.
– Rai
Mar 26 at 5:31
@OlegArsyonov instead of all if statements, use if, else if ..... that will be a little more efficient.
– Pankaj Jindal
Mar 26 at 5:53
add a comment |
Thank you. I should have thought about it!
– OlegArsyonov
Mar 26 at 3:49
1
@OlegArsyonov, did this solve your problem? If yes, kindly accept the answer. Else, state what else or more is needed.
– Rai
Mar 26 at 5:31
@OlegArsyonov instead of all if statements, use if, else if ..... that will be a little more efficient.
– Pankaj Jindal
Mar 26 at 5:53
Thank you. I should have thought about it!
– OlegArsyonov
Mar 26 at 3:49
Thank you. I should have thought about it!
– OlegArsyonov
Mar 26 at 3:49
1
1
@OlegArsyonov, did this solve your problem? If yes, kindly accept the answer. Else, state what else or more is needed.
– Rai
Mar 26 at 5:31
@OlegArsyonov, did this solve your problem? If yes, kindly accept the answer. Else, state what else or more is needed.
– Rai
Mar 26 at 5:31
@OlegArsyonov instead of all if statements, use if, else if ..... that will be a little more efficient.
– Pankaj Jindal
Mar 26 at 5:53
@OlegArsyonov instead of all if statements, use if, else if ..... that will be a little more efficient.
– Pankaj Jindal
Mar 26 at 5:53
add a comment |
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