Nodejs Number Sign sign(x)

Method Source Code

Math.sign = function(x) {
  x = +x;/*from  w  w  w  .j a  va 2 s .c  om*/
  if (x === 0 || isNaN(x))
    return x;
  return x > 0 ? 1 : -1;
}

Related

1. sign()

   Math.sign = function(x) {
     if (x > 0) {
       return 1
     } else if (x < 0) {
       return -1
     } else {
       return 0
   

2. sign(d)

   Math.prototype.sign = function(d) {
     return d<0 ? -1 : 1;
   };
   

3. sign(x)

   Math.sign = Math.sign || function (x) {
       return x === 0 ? 0 : x / Math.abs(x);
   };
   

4. sign(x)

   Math.sign = function(x) {
     if (x > 0) {
       return 1
     } else if (x < 0) {
       return -1
     } else {
       return 0
   

5. sign()

   Number.prototype.sign = function() {
     if(this > 0) {
       return 1;
     } else if (this < 0) {
       return -1;
     } else {
       return 0;
   

6. sign()

   Number.prototype.sign = function() {
       return (this>0) - (this<0);
   };