JavaScript 中使用substr、substring、indexOf、lastIndexOf 等擷取字串方式。 substr. substr ( start , length ) 表示從start 位置開始，擷取length ... ... <看更多>

Introduction to the JavaScript substring() method ... The substring() method accepts two parameters: startIndex and endIndex : ... If you omit the endIndex , the ... ... <看更多>

indexOf , which returns -1 when a substring cannot be found: ... indexOf(substring) !== ... Here's a JavaScript implementation by Project Nayuki, ... ... <看更多>

Learn how to get a JavaScript substring with an example of slice( ), substring( ) and substr( ) methods ... ... <看更多>