Javascript RegExp-匹配字符串并替换

Question

I am very new to RegExp. What I am trying to do is:

I have this original query condition.

var strQuery = "AND i.CreatedDate BETWEEN CAST('01/01/2014' AS Date) " +
    "AND DATEADD(Day, 1, CAST('01/01/2015' AS DATE) )   " +
    "AND e.User_ID IN (-1, 1234, 3433, 9999)  " +
    "AND i.STATUS IN ('Completed')  AND o.Type IN ('Production') "

Now, look for the string "e.User_ID IN (" and then replace anything between the parenthesis () with new IDs String. For example.

var newUserIDs = "8888, 3333, 4444"

// After search and replace using RegExp.
var strQuery = "AND i.CreatedDate BETWEEN CAST('01/01/2014' AS Date) " +
    "AND DATEADD(Day, 1, CAST('01/01/2015' AS DATE) )   " +
    "AND e.User_ID IN (8888, 3333, 4444)  " +
    "AND i.STATUS IN ('Completed')  AND o.Type IN ('Production') "

Please help. Let me know if I am not clear since I am new to this. Thanks in advance.

Answer 1

You can simply concatenate like this.

 var newUserIDs = "8888, 3333, 4444" // After search and replace using RegExp. var strQuery = "AND i.CreatedDate BETWEEN CAST('01/01/2014' AS Date) " + "AND DATEADD(Day, 1, CAST('01/01/2015' AS DATE) ) " + "AND e.User_ID IN (" + newUserIDs + ") " + "AND i.STATUS IN ('Completed') AND o.Type IN ('Production') " alert(strQuery); 

After all it's just a string.

Answer 2

Using regexp it would be like this:

 var strQuery = "AND i.CreatedDate BETWEEN CAST('01/01/2014' AS Date) " + "AND DATEADD(Day, 1, CAST('01/01/2015' AS DATE) ) " + "AND e.User_ID IN (-1, 1234, 3433, 9999) " + "AND i.STATUS IN ('Completed') AND o.Type IN ('Production') "; var newUserIDs = "8888, 3333, 4444"; var newQuery = strQuery.replace(/User_ID IN \\([\\d, -]*\\)/,"User_ID IN (" + newUserIDs + ")"); alert(newQuery); 

You are searching for your cue, followed by 0 or more of any of the characters between [] surrounded by parenthesis.