I am receiving the error `Uncaught TypeError: Lemon is not a function online with the following code
var guildList = [];
guildList.push("Lemon");
console.log(guildList); //some debugging code - I can see Lemon here
console.log(guildList.findIndex("Lemon"));returns the error:
Uncaught TypeError: Lemon is not a function
I have attempted to check to make sure that the variable is a value (this case "Lemon"), however, this does not mitigate it.
findIndex accepts a function. You are passing it a string.
Instead, pass a function which checks whether the parameter is equal to "Lemon":
function a() {
var guildList = [];
guildList.push("Lemon");
console.log(guildList);
return guildList.findIndex(e => e == "Lemon");
}
console.log(a())Or use indexOf instead:
function a() {
var guildList = [];
guildList.push("Lemon");
console.log(guildList);
return guildList.indexOf("Lemon");
}
console.log(a())