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jquerylivevalidation

Checking for positive or negative number

How can we check if the input number is either positive or negative in LiveValidation?

Solution

  • easier way is to multiply the contents with 1 and then compare with 0 for +ve or -ve

    try{
   var n=$("#...").val() * 1;
   if(n>=0){
        //...Do stuff for +ve num
   }else{
       ///...Do stuff -ve num
   }       
}catch(e){
  //......
}

    REGEX:

     var n=$("#...").val()*1;
 if (n.match(new RegExp(^\d*\.{0,1}\d*$))) {
   // +ve numbers (with decimal point like 2.3)
 } else if(n.match(new RegExp(^-\d*\.{0,1}\d*$))){
   // -ve numbers (with decimal point like -5.34)
 }