英镑符号(#)作为注释从JavaScript开始吗?
作者:互联网
井号(#)是否在JavaScript中开始注释?我有一个正在与NPM一起使用的网站,当我尝试使用Grunt缩小JavaScript时,Uglify抛出了错误:
Warning: Uglification failed.
Unexpected character '#'.
Line 1 in app/min-libs/node_modules/grunt-contrib-jshint/node_modules/jshint/nod
e_modules/cli/examples/cat.js
Use --force to continue.
所引用的文件名似乎来自另一个NPM模块,这意味着他们知道自己在做什么.因此,当我转到app / min-libs / node_modules / grunt-contrib-jshint / node_modules / jshint / node_modules / cli / examples / cat.js时,令人反感的行说:
#!/usr/bin/env node
这是评论,还是此NPM模块的所有者知道某些禁止使用超秘密的JavaScript技术?
解决方法:
它不是JavaScript技术,而是* nix OS.它称为shebang
.来自Wiki的报价.
Under Unix-like operating systems, when a script with a shebang is run
as a program, the program loader parses the rest of the script’s
initial line as an interpreter directive; the specified interpreter
program is run instead, passing to it as an argument the path that was
initially used when attempting to run the scrip
因此,可以在外壳程序中执行cat.js文件,就像可执行文件一样(如果它具有可执行文件许可权).
cat.js
代替
node cat.js
标签:npm,comments,jshint,uglifyjs2,javascript 来源: https://codeday.me/bug/20191030/1964460.html