1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
|
//// [typeGuardsInGlobal.ts]
// Note that type guards affect types of variables and parameters only and
// have no effect on members of objects such as properties.
// variables in global
var num: number;
var var1: string | number;
if (typeof var1 === "string") {
num = var1.length; // string
}
else {
num = var1; // number
}
//// [typeGuardsInGlobal.js]
// Note that type guards affect types of variables and parameters only and
// have no effect on members of objects such as properties.
// variables in global
var num;
var var1;
if (typeof var1 === "string") {
num = var1.length; // string
}
else {
num = var1; // number
}
|
