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join方法和resolve方法都可以把几个路径字符串拼接起来成为一个路径,但是他们是有区别的。 join: 1. 用相应操作系统的路径链接符号(比如window是'')把路径片段组合成一个路径,并且路径片段必须是string 2. 路径片段如果出现'..',则前面的路径片段会被忽略,出现几次,前面的路径片段会被忽略相应数量,并且会规范化路径 如下代码:
path.join('./a','../b','c','/d','////../../f')//b\f 首先'../b'路径片段包含'..',所以路径'.a/'会被忽略,路径片段'////../../f'片段包含两个'..', 所以路径片段'c'和'/d'都会被忽略,最后路径规范化之后,返回'b\f', 为什么出现'..'会忽略之前的路径,我们都知道'..'相当于和父级同级, 所以父级会被忽略掉
resolve: 1.相当于CD操作之后,再PWD输出路径。CD操作有斜杠的话,相当于打开另外一个根目录,有./或路径前无符号的话,相当于打开当前目录的下一级,../相当于当前目录的上一级,并且会规范化路径 如下代码:
path.resolve('./a','../b','c','//d','./f'); **假设当前的根目录是root** 1.先打开当前目录下的a目录:root\a; 2.打开a目录的同级目录b:root\b; 3.打开b目录下的子目录c:root\b\c; 4.打开另外一个绝对路劲d:d; 5.打开d目录下的子目录f:d\f; 所以最终返回d\f。
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join方法和resolve方法都可以把几个路径字符串拼接起来成为一个路径,但是他们是有区别的。
join:
1. 用相应操作系统的路径链接符号(比如window是'')把路径片段组合成一个路径,并且路径片段必须是string
2. 路径片段如果出现'..',则前面的路径片段会被忽略,出现几次,前面的路径片段会被忽略相应数量,并且会规范化路径
如下代码:
resolve:
1.相当于CD操作之后,再PWD输出路径。CD操作有斜杠的话,相当于打开另外一个根目录,有./或路径前无符号的话,相当于打开当前目录的下一级,../相当于当前目录的上一级,并且会规范化路径
如下代码:
The text was updated successfully, but these errors were encountered: