I want to convert this string "F1" into an integer 1.
For example
"F1" ===> 1
"F2" ===> 2
"F3" ===> 3
So far, this is what I've done
parseLevel: function(level) {
var levels = {
"F1": 1,
"F2": 2
};
return levels[level];
}
Here's the function
parseLevel: function (level) {
return parseInt(level, 10);
}
I'm getting an error says it's NaN
Since the string you pass has a leading F in it; parseInt can't figure out what integer F1 could be so just strip the F of the string.
parseLevel: function (level) {
return parseInt(level.slice(1), 10);
}
Here is an example of how you could parse any string and only use its digits. to parse an integer.
let s = "ajs382bop";//can be any string it will strip all non digits
function stripAndReturnNumber(s){
return parseInt(s.replace(/\D/g, ""));
//This will replace all non digits with nothing and leave all digits remaining.
//Then it will return the resulting integer.
}
console.log(stripAndReturnNumber(s));//382