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String: split()
The
split
method splits a string into substrings using a separator string.
The substrings are returned as an array. The original string is not changed.
let date = '31-10-2017';
let parts = date.split('-');
let day = parts[0]; // '31'
let month = parts[1]; // '10'
let year = parts[2]; // '2017'
Here, the separator string is the hyphen. It splits the date string into three parts.
These three parts are assigned as an array to the variable parts
.
Afterwards, the individual parts are assigned to separate variables.Exercise
Write a function
Example:
add
that takes a string with a summation task and returns its result as a
number. A finite number of natural numbers should be added. The summation task is a string of the form '1+19+...+281'.Example:
add('7+12+100')
should return 119
.