Checks if x is a valid string index for str.
x
str
The value to check if it's a valid index.
The string to check against.
true if x is a valid index for str, false otherwise.
true
false
if str is not a string.
isStrIdx(0, 'ab') // => trueisStrIdx(1, 'ab') // => trueisStrIdx(2, 'ab') // => falseisStrIdx(-1, 'ab') // => falseisStrIdx(0.5, 'ab') // => false Copy
isStrIdx(0, 'ab') // => trueisStrIdx(1, 'ab') // => trueisStrIdx(2, 'ab') // => falseisStrIdx(-1, 'ab') // => falseisStrIdx(0.5, 'ab') // => false
Checks if
xis a valid string index forstr.