javascript conditional ? :
//XCal - Javascript Inline Conditional Sample (condition brackets only for clarity)
// v-? = Conditional Operator
// v v-: = True/False result value separator
//Format = v-Condition-v ? v-When True-v : v-When False-v
var vResult = (null == null) ? 'Condition True' : 'Condition False';
//vResult is now 'Condition True';javascript conditional
// example:
age >= 18 ? `wine` : `water`;
// syntax:
// <expression> ? <value-if-true> : <value-if-false>function if else javascript
function lessThan100(a, b) {
let sum;
if (a + b >= 100) {
result = false;
} else {
result = true;
}
return result;
}javascript conditional evaluation
if ( expression )
Here are some expressions and their result
Undefined: false
Null: false
Boolean: the result equals the input argument (no conversion)
Number: false if the argument is +0, -0, or NaN; otherwise true
String: false if the argument is an empty string (length = 0);
otherwise true
Object: trueCopyright © 2021 Codeinu
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