一个 JavaScript 的提示用户等待的提示库，大致用法如下： /** 显示等待画面 */ function showSpinner() { var opts = { lines: 13, // The number of lines to draw length: 20, // The length of each line width: 10, // The line thickness radius: 30, // The radius of the inner circle corners: 1, // Corner roundness (0.