Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension,

問題：Cross origin requests are only supported for protocol schemes: http, data, chrome, chrome-extension, https. 分析：由錯誤信息可知是因爲瀏覽器不支持跨域導致的，但由圖能看出我是在本地直接打開頁面，沒有相應的後臺服務器；由地址欄能看出這是採用的file協議，而我的JS代碼中需要訪問某個地址

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