How to return values from a BSP page to Javascript

Question

Hi All,
I want to call a BSP page which reads a single value from a table and returns that value I want the Javascript in the HTML code to get the value from the BSP page.
Can you kindly let me know how I can return the value from the BSP page to JavaScript.
Kindly please provide me a simple code of a BSP page and the Javascript
Thanks
Karen

Answer 1

Hi,
you need 3 elements to make the javascript code read the value in any field in the table: table´s name, line and column. This is how your code could look like:
script language="javascript>
   var row = 0;
   function display(){
      row = row + 1;
      campo = 'tabla1_' + row + '_4';                 " <-- table, line, column
      valor = document.getElementById(campo).value;
</script>
ROW works as a counter. You have in variable valor the value of the field and can do with it what you want, perhaps display it with ALERT. I am reading the values from field 1 to n in column 4 in table TABLA1. Pay attention to the '_' in the concatenation of field´s name. The table in my BSP is very simple:
<htmlb:tableView id                = "tabla1"
                       table             = "<%= mytable %>"
                       width             = "100%"
                       allRowsEditable   = "X"/>
and somewhere I must call function display in my javascript code:
<htmlb:button  id="boton" text="Texto aqui" onClientClick="display()" />
So, give it a try.