$ $$ $A $F $H $R $w Try.these document.getElementsByClassName $方法——被成为瑞士军刀（Swiss Army knife） If provided with a string, returns the element in the document with matching ID; otherwise returns the passed element. Takes in an arbitrary number of argume
$w方法 Splits a string into an Array, treating all whitespace as delimiters. Equivalent to Ruby’s %w{foo bar} or Perl’s qw(foo bar). 代码如下:function $w(string) { if (!Object.isString(string)) return []; string = string.strip(); return string ? string.spl
