## 多行字符串 不要使用 不要这样写长字符串: ``` var myString = 'A rather long string of English text, an error message \ actually that just keeps going and going -- an error \ message to make the Energizer bunny blush (right through \ those Schwarzenegger shades)! Where was I? Oh yes, \ you\'ve got an error and all the extraneous whitespace is \ just gravy. Have a nice day.'; ``` 在编译时, 不能忽略行起始位置的空白字符; “\” 后的空白字符会产生奇怪的错误; 虽然大多数脚本引擎支持这种写法, 但它不是 ECMAScript 的标准规范.