What it does? · The slice() method extracts parts of a string and returns the extracted parts in a new string. · The substr() method extracts ... ... <看更多>

In this tutorial, you will learn how to use the JavaScript String slice() method to extract a substring from a string. ... <看更多>

字串的 slice() 會回傳一個指定索引範圍字元的新字串（不 ... 還有 substring() 、 substr() 但 substr() 它不屬於JavaScript ... ... <看更多>