If else else if in Jquery for a condition

Question

I am having a set of text fields where i am doing validation  Say I am Having a field called  seats  this can accept  value less than  99999  Meaning I should not able to enter the   99999  any thing less than that is ok  For that I wrote below if  and else if   please tell me whether I am doing any thing wrong  I am confused a lot from morning  whether it should be less than or greater than   if      seats   val                setflag   false      alert  Not a valid character     else if     seats   val    lt  99999        alert  Not a valid Number      else       setflag   true

User · Answer

See this answer  val   is comparing a string  not a numeric value

User · Answer

lt script src  https   ajax googleapis com ajax libs jquery 3 4 1 jquery min js  gt  lt  script gt     lt form name  myform  gt      Enter your name      lt input type  text  name  inputbox  id  textBox  value      gt       lt input type  button  name  button  class  member  value  Click1    gt       lt input type  button  name  button  value  Click2  onClick  testResults      gt     lt  form gt     lt script gt      function testResults n          var answer       textBox   val          if  answer    2            alert  Good              else if  answer    3            alert  very Good              else if  answer    4            alert  better              else if  answer    5            alert  best              else           alert  wrong                        document  on  click     member   function            var answer       textBox   val          if  answer    2            alert  Good              else if  answer    3            alert  very Good              else if  answer    4            alert  better              else if  answer    5            alert  best              else           alert  wrong                       lt  script gt

User · Answer

If statement for images in jquery   html   lt button id  chain  gt Chain lt  button gt   lt img src  bulb on jpg  alt  img  id  img   gt    script      lt script gt            document  ready function                    chain   click function                if     img   attr  src     bulb on jpg                        img   attr  src    bulb on jpg                              else                                   img   attr  src    bulb onn jpg                                                   lt  script gt

User · Answer

Change the less-than operator to a greater-than-or-equal-to operator    elseif     seats   val    gt   99999

User · Answer

Iam confused a lot from morning whether it should be less than or greater than  this can accept value less than  quot 99999 quot   I think you answered it yourself     But it s valid when it s less than   Thus the following is incorrect   elseif    quot  seats quot   val    lt  99999     alert  quot Not a valid Number quot     else   You are saying if it s less than 99999  then it s not valid   You want to do the opposite   elseif    quot  seats quot   val    gt   99999     alert  quot Not a valid Number quot     else   Also  since you have    quot  seats quot   twice  jQuery has to search the DOM twice   You should really be storing the value  or at least the DOM element in a variable   And some more of your code doesn t make much sense  so I m going to make some assumptions and put it all together  var seats      quot  seats quot   val     var error   null   if  seats     quot  quot         error    quot Number is required quot     else       var seatsNum   parseInt seats            if  isNaN seatsNum             error    quot Not a valid number quot         else if  seatsNum  gt   99999            error    quot Number must be less than 99999 quot            if  error    null        alert error     else       alert  quot Valid number quot          If you really need setflag  var setflag   error    null   Here s a working sample  http   jsfiddle net LUY8q

User · Answer

A few more things in addition to the existing answers  Have a look at this   var seatsValid   true     cache the selector var seatsVal       seats   val    if seatsVal           seatsValid   false      alert  Not a valid character          convert seatsVal to an integer for comparison  else if parseInt seatsVal   lt  99999       seatsValid   false      alert  Not a valid Number        The variable name setFlag is very generic  if your only using it in conjunction with the number of seats you should rename it  I called it seatsValid   I also initialized it to true which gets rid of the need for the final else in your original code  Next  I put the selector and call to  val   in a variable  It s good practice to cache your selectors so jquery doesn t need to traverse the DOM more than it needs to  Lastly when comparing two values you should try to make sure they are the same type  in this case seatsVal is a string so in order to properly compare it to 99999 you should use parseInt   on it

[jquery] If/else else if in Jquery for a condition

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