Given a string like this:
"boy, girl, dog, cat"
What would be a good way to get the first word and the rest of them, so I could have this:
var first_word = "boy";
var rest = "girl, dog, cat";
Right now I have this:
my_string.split(","); But that gives me all the words that are between the commas.
You can use both split and splice:
var str = "boy, girl, dog, cat";
var arr = str.split(",");
var fst = arr.splice(0,1).join("");
var rest = arr.join(",");
Or similar
// returns an array with the extracted str as first value
// and the rest as second value
function cutFirst(str,token){
var arr = str.split(token);
var fst = arr.splice(0,1);
return [fst.join(""),arr.join(token)];
}
restUse a combination of substring() (returning the substring between two indexes or the end of the string) and indexOf() (returning the first position of a substring within another string):
var input = "boy, girl, dog, cat",
pos = input.indexOf( ',' );
console.log( input.substring( 0, pos ) );
console.log( input.substring( pos + 1 ) );
Maybe you want to add an trim() call to the results to remove whitespaces.
You can use a regex to match the two strings before and after the first comma:
var v = "boy, girl, dog, cat";
var strings = v.match(/([^,]*),(.*)/);
Now strings will be a three element array where
strings[0] contains the full stringstrings[1] contains the string before the first commastrings[2] contains everything after the first commaYou can create an array in a lazy way and then retrieve just the first element.
var ArrayFromString = "boy, girl, dog, cat".split(",");
firstElement = ArrayFromString.pop();
alert(firstElement); //boy
alert(ArrayFromString); //girl, dog, cat
Yet another option is to split the array, get first and join the rest:
var my_string = "boy, girl, dog, cat";
var splitted = my_string.split(',');
var first_item = splitted.shift();
var rest_of_the_items = splitted.join(',');
console.log(first_item); // 'boy'
console.log(rest_of_the_items); // 'girl, dog, cat'
const my_string = "boy, girl, dog, cat";
const splitted = my_string.split(',');
splitted.forEach(element => console.log(element));
You can also them like an array:
console.log(\`This is a ${splitted\[0\]}\`);
// expected output: "boy"
// expected output: " girl"
// expected output: " dog"
// expected output: " cat"
