js中生成uuid的程式碼實現,可以配合圖片驗證碼的校驗
阿新 • • 發佈:2019-01-28
generate_uuid:function () { var s = []; var hexDigits = "0123456789abcdef"; for (var i = 0; i < 36; i++) { s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1); } s[14] = "4"; // bits 12-15 of the time_hi_and_version field to 0010 s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01 s[8] = s[13] = s[18] = s[23] = "-"; var uuid = s.join(""); return uuid; },
function uuid() { var s = []; var hexDigits = "0123456789abcdef"; for (var i = 0; i < 36; i++) { s[i] = hexDigits.substr(Math.floor(Math.random() * 0x10), 1); } s[14] = "4"; // bits 12-15 of the time_hi_and_version field to 0010 s[19] = hexDigits.substr((s[19] & 0x3) | 0x8, 1); // bits 6-7 of the clock_seq_hi_and_reserved to 01 s[8] = s[13] = s[18] = s[23] = "-"; var uuid = s.join(""); return uuid; }
這兩種方法適合非常適合於配合圖片驗證碼的校驗進行使用,程式碼量極少,邏輯簡單。
// 索取圖片驗證碼方法
generate_image_code: function () {
// 生成uuid==image_code_id
this.image_code_id = this.generate_uuid();
// 拼接獲取圖片驗證碼的url,賦值給img標籤的src屬性
this.image_code_url = 'http://127.0.0.1:8000' + '/image_codes/' + this.image_code_id + '/';
},