jQuery traversing Table application example_jquery

Copy code The code is as follows:

function checkwo(){
var vales = "";
$("#vales").val(vales);
var flag = false;
var bo = true;
$("#data_table").find("tr").each (function(){
$(this).find("td input").each(function(){
if($(this).attr("name")=="rid")
{
vales =$(this).val() "&";
}
if($(this).attr("name")=="qty")
{
var qty = $(this).val();
if(qty<0)
{
alert("The actual quantity cannot be a negative number");
bo = false;
return;
}
if(qty>0)
{
flag = true;
}
vales =qty ",";
}
});

});
if(bo==false)
{
return;
}
$("#vales").val(vales) ;
if(flag==false)
{
alert("Please enter the actual quantity");
return;
}
document.all.sys_submit.click() ;
}