How to check the function s return value if true or false

Question

I have a function here that validate fields in a form if they are empty   function ValidateForm         jQuery  span error msg   hide       var success   true      jQuery   shippingF input   each function                         if jQuery this  val                                      jQuery this  next   show                    success   false                            return success      Now I wanted to use that function here   function post url formId          jQuery   process   html   lt img src   lt  php echo get bloginfo  wpurl     wp-content plugins   basename dirname   FILE       images co ajax-loader gif     gt   alt  loading  title  ajax-loader  width  16  height  16  class  alignnone size-full wp-image-134  gt          jQuery post url  jQuery       formId  serialize    function d            jQuery  html body   animate  scrollTop  jQuery   scrollhere   offset   top   slow            jQuery   response   html   lt center gt  lt p style  height 820px  gt  lt span style  color black font-weight bold font  11px arial verdana sans-serif   gt  lt b gt Loading available payment getaways   lt  b gt  lt  span gt  lt br  gt  lt img src   lt  php echo get bloginfo  wpurl     wp-content plugins   basename dirname   FILE       images co 8-1 gif     gt   width  220  height  19    gt  lt  p gt  lt  center gt             jQuery   response   load   lt  php echo get bloginfo  wpurl     wp-content plugins   basename dirname   FILE       checkout payment php     gt    function     Cufon refresh                jQuery   response   attr  style   height 1030px                I tried it and I come up with this   function post url formId     ValidateForm     if ValidateForm       false        jQuery  html body   animate  scrollTop  jQuery   shippingF   offset   top   slow       else         jQuery   process   html   lt img src   lt  php echo get bloginfo  wpurl     wp-content plugins   basename dirname   FILE       images co ajax-loader gif     gt   alt  loading  title  ajax-loader  width  16  height  16  class  alignnone size-full wp-image-134  gt          jQuery post url  jQuery       formId  serialize    function d            jQuery  html body   animate  scrollTop  jQuery   scrollhere   offset   top   slow            jQuery   response   html   lt center gt  lt p style  height 820px  gt  lt span style  color black font-weight bold font  11px arial verdana sans-serif   gt  lt b gt Loading available payment getaways   lt  b gt  lt  span gt  lt br  gt  lt img src   lt  php echo get bloginfo  wpurl     wp-content plugins   basename dirname   FILE       images co 8-1 gif     gt   width  220  height  19    gt  lt  p gt  lt  center gt             jQuery   response   load   lt  php echo get bloginfo  wpurl     wp-content plugins   basename dirname   FILE       checkout payment php     gt    function     Cufon refresh                jQuery   response   attr  style   height 1030px                   The problem is that  the validation is working   however   post   function runs even though there is empty field  I guess its on the if else condition   is there a better way to accomplish this   Thank you

User · Answer

You don t need to call ValidateForm   twice  as you are above  You can just do  if  ValidateForm          else       I think that will solve the issue as above it looks like your comparing true false to the string equivalent  false

User · Answer

false     false    For good measures  put the result of validate into a variable to avoid double validation and use that in the IF statement  Like this   var result   ValidateForm    if result    false

User · Answer

Wrong syntax  You can t compare a Boolean to a string like  false  or  true   In your case  just test it s inverse   if  ValidateForm            You could test against the constant false  but it s rather ugly and generally frowned upon   if ValidateForm      false

User · Answer

you re comparing the result against a string   false   not the built-in negative constant  false   just use   if ValidateForm      false      or better yet   if  ValidateForm        also why are you calling validateForm twice

User · Answer

ValidateForm returns boolean not a string  When you do this if ValidateForm       false    is the same of if false     false    which is not true   function post url  formId        if  ValidateForm                 False       else              True

[jquery] How to check the function's return value if true or false

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