And if is it omitted, the rest of the string will be extracted automatically.
So whenever you are in doubt about which function should be used, think about the required parameter. Enjoy! There's also a third way to get a substring, the String#slice() function, that you may see in the wild. Cem Eygi. If end is omitted, slice extracts chars to the end of the string. console.log(str.slice(5,1000)); @Rahul Sadi, First character is at index 0. substring will treat a negative start index as 0. slice extracts from the end of the string if the starting index is negative. Cem Eygi.
If omitted, slice() selects all characters from the start-position to the end of the string.Use negative numbers to select from the end of the string. It supports extracting from the end of the string and I feel that returning an empty string when start index > stop follows the principle of least surprise better than substring's swapping of parameters. console.log(str.substr(0,2)); //TO
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