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                [TOC] ## 調用拉卡拉A8 POS **setPos(命令,異步回調)** 異步回調由底層自動完成回調 只需要傳入普通函數即可 #### 命令請自行參考拉卡拉 ``` setPos(' 40000000000001 2', e=>{ console.log(e) }) ``` ## setPos 返回調用狀態 | 成功 | 失敗 | | --- | --- | | true | false | ## callFunction 返回字段數據 如果有錯誤 code為-1 data包含報錯信息 #### code參考拉卡拉手冊 以及data數據格式解析 | code | data | | --- | --- | 此時的code僅代表數據返回成功并不代表data數據的成功 data數據情況請自行依照拉卡拉pos手冊解析判斷 ## 相關js函數 ### addPreZero() 補0 #### 位數修改4 ``` function addPreZero(num){ var t = (num+'').length, s = ''; for(var i=0; i<4-t; i++){ s += '0'; } return s+num; } ``` #### POS配置文件 文件名:LklPos+Cashier.ini 目錄在商戶端安裝的根目錄
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