为AJAX添加等待效果(spin.js)

在WEB开放中,如果使用了AJAX,那么如果服务器不能马上返回结果,希望能有个等待的东西来提示用户。

spin.js就是专门用来实现等待的效果,一个效果图如下:

它主要有以下特点

  • 非图片和CSS的扩展
  • 不需要额外的依赖(如jQuery)
  • 能自由的配置效果
  • 能在绝大多数浏览器下运行(包括IE6)

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leetcode Mini Parser

leetcode Mini Parser

Given a nested list of integers represented as a string, implement a parser to deserialize it.

Each element is either an integer, or a list — whose elements may also be integers or other lists.

Note: You may assume that the string is well-formed:

  • String is non-empty.
  • String does not contain white spaces.
  • String contains only digits 0-9, [, ,, ].

Example 1:

Example 2:

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leetcode Shuffle an Array

leetcode Shuffle an Array

Shuffle a set of numbers without duplicates.

Example:

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