arguments
转数组
1 | let args = Array.prototype.slice.call(arguments); |
判断是否是Generator
1 | // 来自于co,这里的判断前提是一个对象,所以传入的参数名是obj |
npm publish
npm publish 时会将.gitignore
改为.npmignore
防止 Node.js 进程崩溃
可以在 process 对象的 uncaughtException
事件上注册监听器。1
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7const myEmitter = new MyEmitter();
process.on('uncaughtException', (err) => {
console.error('有错误');
});
myEmitter.emit('error', new Error('whoops!'));
min-height max-height height
height会被min-height和max-height所影响,min-height和max-height不只是设置了高度的限制,logical-height由3个属性共同决定
0.5px
html
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22<div class="example--border"></div>
* Firefox: y
* Safari: y
* Chrome: n
* Falls back to 1px for non-Retina (no need to wrap in a media query)
## 0.5px box-shadow
<div class="example--box-shadow"></div>
* Chrome: y
* Firefox: y
* Safari: n
## linear-gradient
<div class="example--gradient"></div>
* Chrome: y
* Safari: y
* Firefox: y
css
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17[class^='example'] {
margin: 1em 0;
height: 1px;
}
.example--box-shadow {
box-shadow: 0 0.5px 0 blue;
}
.example--border {
border-top: 0.5px solid blue;
}
.example--gradient {
background-image: linear-gradient(to bottom, blue 0%, blue 51%, transparent 51%);
background-size: 100% 1px;
}
css triangle principle
Node Module Wapper
1 | (function (exports, require, module, __filename, __dirname) { |