javascript 字节
Whenever you work with JavaScript code, it's as though there's always a shorter way to code something. You thought that a code set was basic until you found out that something was basic...er. One of those code shortcuts can be found with conditions, specifically short if clauses.
每当您使用JavaScript代码时，似乎总会有一种较短的方法来编写代码。 您以为代码集是基本的，直到您发现某些东西是基本的...呃。 可以使用条件找到这些代码快捷方式之一，特别是if子句。
A typical short if clause would look something like this:
典型的short if子句如下所示：
if(callback) { callback(); }Oddly enough this conditional can be made shorter:
奇怪的是，该条件可以缩短：
callback && callback();The && is less code than the if(){}; of course only by a few characters but does the same job. You could argue that readability suffers but that's up to individual developers.
&&的代码少于if(){} ； 当然只有几个字符，但可以完成相同的工作。 您可能会争辩说可读性会受到影响，但这取决于单个开发人员。
翻译自: https://davidwalsh.name/javascript-conditionals
javascript 字节
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