Spreadsheet Script, match with wildcard and different cases - if-statement

Question

I am having trouble executing the Spreadsheet script below.
I think there are two mistakes but I do not know how to fix.
Could anyone help it to fix it?
1:Wildcard
if(original_date=='....-..-..')
2:if synteax
if(original_date=='....-..-..')
{condition="matched"}
Detail
On the spreadsheet, there are two columns.
The first columns have dates in a format as YYYY-MM-DD such as 2020-04-21.
But sometimes, they have different formats such as 04/21/2020.
The second columns are empty.
Only when the first column cell has the "YYYY-MM-DD" format, I want to copy the cell into the second cell in the second column.
*They have 10 rows.
Here is the script.
var sheet = SpreadsheetApp.getActive().getSheetByName('Sheet1')
for(let i=1; i<=10; i++)
{
original_date_range = sheet.getRange(i, 1);
original_date = original_date_range.getValue();
cleaned_date_range = sheet.getRange(i, 2);
var condition = "";
if(original_date=='....-..-..')
{condition="matched"}
switch(condition)
{
case "matched":
cleaned_date_range.setValue(original_date);
case "":
cleaned_date_range.setValue("");
break;
}
}

Answer 1

I found the solution by myself.
1.Wildcard
The date "2020-04-25" can be written as /\d{4}.\d{2}.\d{2}/
2.If syntax
(Wildcard).test(string to check) is going to give you true/false output
In summary,
if you want to execute different tasks through the verification of date format such as 2020-04-25,
var sheet1 = SpreadsheetApp.getActive().getSheetByName('Sheet1')
var limit = sheet1.getLastRow()
for(let i=4; i<=10; i++) //You can add more rows if you have
{
var orignal_date_cell = sheet1.getRange(i, 1);
var orignal_date_cell_value = orignal_date_cell.getValue();
var target_date_cell = sheet1.getRange(i,2);
if ((/\d{4}.\d{2}.\d{2}/).test(orignal_date_cell_value))
{
target_date_cell.setValue(orignal_date_cell_value);
}
}