I want to split a string by the delimiter \s and , so that 'hello , world , hi yes' returns as [ 'hello', 'world', 'hi', 'yes' ]
Right now I'm using str.split(/[\s,]+/), but the issue with this is that it doesn't compensate for falsely strings such as the empty string or a string that consists of only space.
That is, '' returns [ '' ] and ' ' returns [ '', '' ], but they should just return []
You really only need a RegEx to detect the spaces:
var s = 'hello , world , hi, yes a b';
// Replace one or more spces with a comma
// Split on the commas
// Do a filtering loop over results
// Return any strings (into a new array) that have characters in them after a trim is performed
var result = s.replace(/\s+/g, ",").split(",").filter(word => { return word.trim() !== "" ; });
console.log(result);
['a','b']
filter because filter also returns a new array, just like map does.
.split(',').map(x => x.trim()).filter(x => x.length)When working with regexes, it's usually better to concentrate on what you want instead on what you don't want. In other words, use match, not split:
s = 'hello , world , hi, yes'
r = s.match(/[^\s,]+/g)
console.log(r)
s = ' '
r = s.match(/[^\s,]+/g)
console.log(r)If you don't like null as the "empty" result, do
r = s.match(/[^\s,]+/g) || []
Try this expression, that looks for zero or more spaces before and after the comma:
\s*,\s*
You can accomplish this with a single line of JavaScript. It is really simple.
let testString = 'hello , world , hi, yes';
let wordArray = testString.split(',').map(word => (word.trim()));
console.log(wordArray); // prints ['hello', 'world', 'hi', 'yes']You need to specify a count of chars, for example, at least one:
'hello , world , hi, yes'.split(/[\s,]+/)
Notice that split will always return at least one item = the entire string if no matches were found. So ''.split(/[\s,]+/) will produce [''].
\w{1,}Demo