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                ## 一、JS生成隨機字符串 >[info] #### 在創建訂單時,我們希望訂單號是唯一的,那么,則可能需要用到```隨機字符串+時間格式``` ### 代碼如下: ``` /** * randomWord 產生任意長度隨機字母數字組合 * @param randomFlag 是否任意長度 min-任意長度最小位[固定位數] max-任意長度最大位 * @param min * @param max * @returns {string} */ function randomWord(randomFlag, min, max){ var str = "", range = min, arr = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9', 'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z', 'A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z']; // 隨機產生 if(randomFlag){ range = Math.round(Math.random() * (max-min)) + min; } for(var i=0; i<range; i++){ pos = Math.round(Math.random() * (arr.length-1)); str += arr[pos]; } return str; } ``` ### 調用方法 ``` // 生成 3 - 32 位隨即字符串 randomWord(true,3,32); // 例如:olyOXUF5oDsuMmXl3Mi48 // 生成 32 位隨機字符串 randomWord(false,32); // 例如:fjpnWj29Bb8boiXbLeDF0nxkR4aYcLRl ```
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