JAVASCRIPT

javascript sign

Math.sign(number)

Parameters: This function accepts a single parameter number which represents the number whose sign you want to know.

Return Value: The Math.sign() function returns five different values as described below:

1. It returns 1 if the argument passed is a positive number.
2. It returns -1 if the argument passed is a negative number.
3. It returns 0 if the argument passed is a positive zero.
4. It returns -0 if the argument passed is a negative zero.
5. If none of the above cases match,it returns Nan.

+ sign javascript

// JavaScript Unary Operators The unary plus operator (+)
// The unary plus ( + ) precedes its operand and evaluates to its operand. It attempts to convert the operand to a number, if it isn't already.

+42           // 42
+"42"         // 42
+true         // 1
+false        // 0
+null         // 0
+undefined    // NaN
+NaN          // NaN
+"foo"        // NaN
+{}           // NaN
+function(){} // NaN

// Note that attempting to convert an array can result in unexpected return values.
// In the background, arrays are first converted to their string representations:

[].toString() === '';
[5].toString() === '5';
[1, 2].toString() === '1,2';

// The operator then attempts to convert those strings to numbers:

+[]           // 0   ( === +'' )
+[5]          // 5   ( === +'5' )
+[1, 2]       // NaN ( === +'1,2' )

sign javascript

Math.sign(number)

Parameters: This function accepts a single parameter number which represents the number whose sign you want to know.

Return Value: The Math.sign() function returns five different values as described below:

1. It returns 1 if the argument passed is a positive number.
2. It returns -1 if the argument passed is a negative number.
3. It returns 0 if the argument passed is a positive zero.
4. It returns -0 if the argument passed is a negative zero.
5. If none of the above cases match,it returns Nan.