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.