Python學習筆記第十八周

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目錄：

　　一、JavaScriptRegex

 

 

內容：

　　一、JavaScriptRegex

　　　　1、test   

　　　　判斷字串是否符合規定的Regex

　　　　例子：

　　　　rep = /^\d+$/

　　　　rep.test(‘123‘)返回true

 

　　　　2、exec

　　　　擷取匹配的資料，在匹配時，預設只能匹配到第一個即返回，且匹配值以數組形式存在

　　　　例子：分組匹配，會匹配兩次，第一次匹配整體，第二次會將分組內容單獨匹配出來

test = ‘JavaScript is more fun than Java or JavaBeans!‘"JavaScript is more fun than Java or JavaBeans!"var pattern = /\bJava\w*\b/undefinedpattern.exec(test)輸出：["JavaScript", index: 0, input: "JavaScript is more fun than Java or JavaBeans!"]var pattern = /\bJava(\w*)\b/pattern.exec(test)輸出：(2) ["JavaScript", "Script", index: 0, input: "JavaScript is more fun than Java or JavaBeans!"]

　　例子2：全域匹配 在匹配模板後面加g

　　

test = ‘JavaScript is more fun than Java or JavaBeans!‘"JavaScript is more fun than Java or JavaBeans!"var pattern = /\bJava\w*\b/gundefinedpattern.exec(test)["JavaScript", index: 0, input: "JavaScript is more fun than Java or JavaBeans!"]pattern.exec(test)["Java", index: 28, input: "JavaScript is more fun than Java or JavaBeans!"]pattern.exec(test)["JavaBeans", index: 36, input: "JavaScript is more fun than Java or JavaBeans!"]

沒有加分組的情況

var pattern = /\bJava(\w*)\b/gundefinedtest = ‘JavaScript is more fun than Java or JavaBeans!‘"JavaScript is more fun than Java or JavaBeans!"pattern.exec(test)(2) ["JavaScript", "Script", index: 0, input: "JavaScript is more fun than Java or JavaBeans!"]pattern.exec(test)(2) ["Java", "", index: 28, input: "JavaScript is more fun than Java or JavaBeans!"]pattern.exec(test)(2) ["JavaBeans", "Beans", index: 36, input: "JavaScript is more fun than Java or JavaBeans!"]

有分組的情況

 

　　　　

 

　　二、BootStrap

　　　　- CSS

　　　　- JS

　　

　　

 

Python學習筆記第十八周