如何在JavaScript中捕获异常？ [英] How to catch exceptions in javascript?

问题描述

我写了下面的代码：

  var adoConn = new ActiveXObject（ADODB.Connection）; 
 var adoRS = new ActiveXObject（ADODB.Recordset）; 
 var rec = new ActiveXObject（ADODB.Record）; 
 adoConn.Open =DRIVER = {MySQL ODBC 3.51 Driver}; SERVER = 172.25.37.145; +DATABASE = confluence; UID = root; PASSWORD = somePassword; OPTION = 3; 
 // Connectionstring 
 alert（'Database Connected'）; 
 adoConn.Execute（insert into`session`（SessionId，Timestamp）values（'+ SessionId +'，'+ SessionCurrenttime +'））; 
  

如果我获得相同的会话ID，那么查询没有执行，因为它是主键数据库。

解决方案

要完成，这里是完整的结构

  try {
 //你可以抛出异常的代码在这里
} catch（e）{
 //做异常处理
最后{
 //不管它是否工作，在这里做这些东西（清理？）
} 
  

I want to catch exceptions in javascript if an insertion query is not done.

I have written the code below:

var adoConn = new ActiveXObject("ADODB.Connection");
var adoRS = new ActiveXObject("ADODB.Recordset");
var rec = new ActiveXObject("ADODB.Record");
adoConn.Open="DRIVER={MySQL ODBC 3.51 Driver};SERVER=172.25.37.145;" + "DATABASE=confluence;UID=root;PASSWORD=somePassword;OPTION=3";
//Connectionstring
alert('Database Connected');
adoConn.Execute("insert into `session` (SessionId,Timestamp) values ('"+SessionId+"','"+SessionCurrenttime+"')");

If I get the same session id then the query was not executed as it is the primary key in the database.

解决方案

To be complete, here's the full structure

try {
  // your code that can throw exception goes here
} catch(e) {
  //do stuff with the exception
} finally {
  //regardless if it worked or not, do stuff here (cleanup?)
}

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