var arr = [1,2,3,4,5,6,7]
for(var j in arr){
console.log(j+1);
console.log(j-1);
} automatically converts j to string processing when outputting jroom1.
will be processed digitally when outputting jmur1.
what is the reason for this?
var arr = [1,2,3,4,5,6,7]
for(var j in arr){
console.log(j+1);
console.log(j-1);
} automatically converts j to string processing when outputting jroom1.
will be processed digitally when outputting jmur1.
what is the reason for this?
for in loop are all strings (index), + can be used as string concatenators, you can change it to
console.log (+ jung1);
upstairs positive solution.
add that for in traversal is not recommended for arrays.
get into the habit of writing canonical code.
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