Switch Statement, It Does Not Work With Prompt

I just learned switch statements. I was practicing it by building something. When i set the value of variable to a number it works but when i asks the user for a number it always o

Solution 1:

You need to convert the user input from a string to an integer, like so

confirm("You want to learn basic counting?");
var i = prompt("Type any number from where you want to start counting[Between 0 and 10]");
i = parseInt(i); // this makes it an integerswitch(i) {
//...

Solution 2:

The switch statement performs a strict comparison between the input expression and case expressions. The output of the following would be:

var i = 1;
switch (i) {
    case"1":
        console.log('String 1');
        break;
    case1:
        console.log('Number 1');
        break;
}
// Number 1var j = "1";
switch (j) {
    case"1":
        console.log('String 1');
        break;
    case1:
        console.log('Number 1');
        break;
}
// String 1

The prompt function returns a string so either:

• Change your case statements to case "1":, case "2":
• Case the user input to a number using i = Number(i)

Solution 3:

I know this question had answered before, but I want to add something else. Beside of other answers, you can use the unary plus +. It actually does the same thing as Number(...), but is shorter. In other words, the plus operator + applied to a single value, doesn’t do anything to numbers. But if the operand is not a number, the unary plus converts it into a number.

for instance:

let a = '2';
alert( a + 3); // 23

but

let a = '2';
alert( +a + 3); // 5

so add unary + before prompt in your code:

var i = +prompt("Type any number from where you want to start counting[Between 0 and 10]");