JavaScriptsplit ()

The split () method is used to split a string into a string array. Syntax: stringObject. split (separator, howator) parameter description: separator: required. String or regular expression, which separates stringObject from the specified place. Howmany: Yes

The split () method is used to split a string into a string array.

Syntax:
StringObject. split (separator, howator)

Parameter description:
Separator: required. String or regular expression, which separates stringObject from the specified place.
Howmany: Optional. This parameter specifies the maximum length of the returned array. If this parameter is set, no more substrings are returned than the array specified by this parameter. If this parameter is not set, the entire string is split, regardless of its length.

Return Value:
A string array. This array is created by dividing the string stringObject into substrings at the boundary specified by separator. The strings in the returned array do not include the separator itself.
However, if separator is a regular expression that contains a subexpression, the returned array contains the strings that match the subexpression (but does not include the text that matches the entire regular expression ).

Tips and notes:
NOTE: If an empty string ("") is used as a separator, each character in the stringObject is separated.
Note: The operations executed by String. split () are the opposite to those executed by Array. join.

Instance:
1. Separate strings in different ways

Var str = "How are you doing today? "Document. write (str. split (" ") +" ") Document. write (str. split (" ") +" ") Document. write (str. split (" ", 3) script

Result:
 

2. Split strings with more complex structures

"2: 3: 4: 5 ". split (":") // Returns ["2", "3", "4", "5"] "| a | B | c ". split ("|") // Returns ["", "a", "B", "c"]

 

3. Sentence segmentation into words

Var words = sentence. split ('')
Or use the regular expression as the separator:
Var words = sentence. split (/\ s + /)

4. To split words into letters or strings into characters, use the following code:

"Hello". split ("") // you can return ["h", "e", "l", "l", "o"]
If you only need to return a part of the characters, use the howmany parameter:
"Hello". split ("", 3) // you can return ["h", "e", "l"]