由于眼睛的问题,我不得不将控制台背景色改为白色,但字体是灰色的,它使消息无法阅读。我怎样才能改变呢?
当前回答
我发现上面的答案(https://stackoverflow.com/a/41407246/4808079)非常有用,但不完整。如果你只想给某样东西上色一次,我想这没问题,但我认为以可运行的函数形式共享它更适用于现实生活中的用例。
const Color = {
Reset: "\x1b[0m",
Bright: "\x1b[1m",
Dim: "\x1b[2m",
Underscore: "\x1b[4m",
Blink: "\x1b[5m",
Reverse: "\x1b[7m",
Hidden: "\x1b[8m",
FgBlack: "\x1b[30m",
FgRed: "\x1b[31m",
FgGreen: "\x1b[32m",
FgYellow: "\x1b[33m",
FgBlue: "\x1b[34m",
FgMagenta: "\x1b[35m",
FgCyan: "\x1b[36m",
FgWhite: "\x1b[37m",
FgGray: "\x1b[90m",
BgBlack: "\x1b[40m",
BgRed: "\x1b[41m",
BgGreen: "\x1b[42m",
BgYellow: "\x1b[43m",
BgBlue: "\x1b[44m",
BgMagenta: "\x1b[45m",
BgCyan: "\x1b[46m",
BgWhite: "\x1b[47m"
BgGray: "\x1b[100m",
}
function colorString(color, string) {
return `${color}${string}${Color.Reset}`;
}
function colorLog(color, ...args) {
console.log(...args.map(
(it) => typeof it === "string" ? colorString(color, string) : it
));
}
像这样使用它:
colorLog(Color.FgYellow, "Some Yellow text to console log", { someObj: true });
console.log([
colorString(Color.FgRed, "red"),
colorString(Color.FgGreen, "green"),
colorString(Color.FgBlue, "blue"),
].join(", "));
其他回答
var to_rgb = function (_text, _r, _g, _b) {
return "\x1b[38;2;" + _r + ";" + _g + ";" + _b + "m" + _text + "\x1b[0m";
};
此代码帮助设置前景色:\x1b[38;2;R;G;Bm
这在某些地方可能行不通
你可以使用下面的例子: https://help.ubuntu.com/community/CustomizingBashPrompt
也是nodeJs的一个要旨
例如,如果你想让部分文本显示为红色,只需执行console.log with:
"\033[31m this will be red \033[91m and this will be normal"
基于此,我为Node.js创建了“colog”扩展。你可以使用以下方法安装:
npm install colog
回购和npm: https://github.com/dariuszp/colog
如果你想保持简单,而不使用任何外部模块/学习新的api /破解核心控制台功能:
const LCERROR = '\x1b[31m%s\x1b[0m'; //red
const LCWARN = '\x1b[33m%s\x1b[0m'; //yellow
const LCINFO = '\x1b[36m%s\x1b[0m'; //cyan
const LCSUCCESS = '\x1b[32m%s\x1b[0m'; //green
const logger = class {
static error(message, ...optionalParams) { console.error(LCERROR, message, ...optionalParams) }
static warn(message, ...optionalParams) { console.warn(LCWARN, message, ...optionalParams) }
static info(message, ...optionalParams) { console.info(LCINFO, message, ...optionalParams) }
static success(message, ...optionalParams) { console.info(LCSUCCESS, message, ...optionalParams) }
}
// then instead (as presented in the accepted answer)
// console.error(LCERROR, 'Error message in red.');
// you write:
logger.error('Error message in red.');
// or with multiple parameters (only the message will be red):
logger.error('Error message in red.', 1, false, null, {someKey: 'whatever'});
// or use backticks (template literal) instead multiple params:
logger.error(`This will be red as ${foo} and ${bar} too.`);
现在您可以像使用控制台一样使用记录器。没有新的API需要记住……通常你会把它放到一个模块(logger.js)中,并导出类,以便在你的应用程序中随处使用它,因为const logger = require('./logger');
我在我的snippet目录中创建了一个名为styles.js的文件,我认为它可以帮助任何想要导入单个文件的人。
这是对color.js的styles.js文件的一个小修改,帮助了我很多。
以下是该文件的内容:
// Original: https://github.com/Marak/colors.js/blob/master/lib/styles.js
const styleCodes = {
// Reset all styles.
reset: [0, 0],
// Text styles.
bold: [1, 22],
dim: [2, 22],
italic: [3, 23],
underline: [4, 24],
inverse: [7, 27],
hidden: [8, 28],
strikethrough: [9, 29],
// Foregound classic colours.
fgBlack: [30, 39],
fgRed: [31, 39],
fgGreen: [32, 39],
fgYellow: [33, 39],
fgBlue: [34, 39],
fgMagenta: [35, 39],
fgCyan: [36, 39],
fgWhite: [37, 39],
fgGray: [90, 39],
// Foreground bright colours.
fgBrightRed: [91, 39],
fgBrightGreen: [92, 39],
fgBrightYellow: [93, 39],
fgBrightBlue: [94, 39],
fgBrightMagenta: [95, 39],
fgBrightCyan: [96, 39],
fgBrightWhite: [97, 39],
// Background basic colours.
bgBlack: [40, 49],
bgRed: [41, 49],
bgGreen: [42, 49],
bgYellow: [43, 49],
bgBlue: [44, 49],
bgMagenta: [45, 49],
bgCyan: [46, 49],
bgWhite: [47, 49],
bgGray: [100, 49],
bgGrey: [100, 49],
// Background bright colours.
bgBrightRed: [101, 49],
bgBrightGreen: [102, 49],
bgBrightYellow: [103, 49],
bgBrightBlue: [104, 49],
bgBrightMagenta: [105, 49],
bgBrightCyan: [106, 49],
bgBrightWhite: [107, 49],
};
// This object will contain the string representation for all style codes.
const styles = {};
// Loop over all the style codes and assign them to the `styles` object.
//
// The a `styleCode` in the `styleCodes` object consists of two numbers:
// Index 0: The opening style code (In HTML this can be the opening <b> tag).
// Index 1: The closing style code (In HTML this can be the closing </b> tag).
for (let styleCode of Object.keys(styleCodes)) {
styles[styleCode] = {
open: `\x1B[${styleCodes[styleCode][0]}m`,
close: `\x1B[${styleCodes[styleCode][1]}m`,
};
}
module.exports = styles;
其实用起来很简单。
const styles = require("/path/to/styles.js");
// Let's say we've got an error:
const errorOpen = styles.bold.open + styles.bgRed.open + styles.fgWhite.open;
const errorClose = styles.reset.close; // Close everything
console.log(errorOpen, "ERROR", errorClose, ": Missing semicolon at line 9.");
我不想要任何依赖于此,只有这些在OS x上为我工作。所有其他示例从这里的答案给了我八进制文字错误。
Reset = "\x1b[0m"
Bright = "\x1b[1m"
Dim = "\x1b[2m"
Underscore = "\x1b[4m"
Blink = "\x1b[5m"
Reverse = "\x1b[7m"
Hidden = "\x1b[8m"
FgBlack = "\x1b[30m"
FgRed = "\x1b[31m"
FgGreen = "\x1b[32m"
FgYellow = "\x1b[33m"
FgBlue = "\x1b[34m"
FgMagenta = "\x1b[35m"
FgCyan = "\x1b[36m"
FgWhite = "\x1b[37m"
FgGray = "\x1b[90m"
BgBlack = "\x1b[40m"
BgRed = "\x1b[41m"
BgGreen = "\x1b[42m"
BgYellow = "\x1b[43m"
BgBlue = "\x1b[44m"
BgMagenta = "\x1b[45m"
BgCyan = "\x1b[46m"
BgWhite = "\x1b[47m"
BgGray = "\x1b[100m"
来源:https://coderwall.com/p/yphywg/printing-colorful-text-in-terminal-when-run-node-js-script
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