Oracle Apex:PL/SQL块中的Javascript代码

Question

是否可以在PL/SQL块中包含JavaScript代码.我想在oracle Apex页面进程中执行提交时包含JavaScript代码的pl/sql块.

DECLARE
  v_count   NUMBER;

  BEGIN
        select count(*) into v_count
        from summary
        where prd_items = 'Total';

 HTP.p ('<script type="text/javascript">');
 HTP.p (   'alert(''The value of Total for BU is ' ||v_count|| '.\n'
      || 'You have to enter correct values to proceed further \n'');');
 HTP.p ('</script>');
END; 

Submit我的页面区域中有按钮,这个pl/sql块是页面处理项,并在页面submit(Conditional:Submit)上执行.

但是我无法弹出警报框.请指教.

谢谢.

Answer 1

是否可以在 PL/SQL 块中包含 JavaScript 代码？

• 是的

但是，您尝试执行的在 SUBMIT 之后传递 javascript 函数的操作不会起作用。只有将执行点更改为 AFTER HEADER 时，它才会起作用。

或者，如果您只想验证输入的值并且不想使用 apex 验证，则可以使用 APEX_ERROR 包。试试这个。

DECLARE
  v_count   NUMBER;

  BEGIN
        select prd_items into v_count
        from summary
        where prd_items = 'Total';
        -- I dont really know what you want to 
        --accomplish with this query but Im pretty sure 
        --It will not return a number
        -- if you want to count the number of prd_items it should be like this
        --select COUNT(*) 
        --into v_count
        --from summary
        --where prd_items = 'Total';


    APEX_ERROR.ADD_ERROR(
      p_message            => 'The value of Total for BU is '||v_count||'.<br>'||
                              'You have to enter correct values to proceed further',
      p_display_location   => apex_error.c_inline_in_notification 
    );  

END; 

编辑：如果您想在计数不等于 100 时显示错误，请执行以下操作：

DECLARE
  v_count   NUMBER;

  BEGIN

     Select COUNT(*) 
     into v_count
     from summary
     where prd_items = 'Total';

  IF v_count != 100 THEN
    APEX_ERROR.ADD_ERROR(
      p_message            => 'The value of Total for BU is '||v_count||'.<br>'||
                              'You have to enter correct values to proceed further',
      p_display_location   => apex_error.c_inline_in_notification 
    );  


 END IF;
END;