摘要：CREATE TABLE a1( id INT NOT NULL AUTO_INCREMENT COMMENT '编号', txt VARCHAR(20) NOT NULL DEFAULT '' COMMENT '文本', PRIMARY KEY (id));INSERT INTO a1 (txt)... 阅读全文

摘要：var arr = new Array();arr["a"] = "aa";arr["b"] = "bb";arr["2"] = "22";arr[0] = "00";alert(arr.length); // 3for (var i = 0; i < arr.length; i++) { a... 阅读全文