需要帮助使用.toUppecase方法将存储在“角色”中的字符串转换为大写字母

如何解决需要帮助使用.toUppecase方法将存储在“角色”中的字符串转换为大写字母

let firstName = "Sean";
let lastName = "Bowden";
let role = 'developer';
var msg = firstName + " " + lastName + ": " + role + ".";

我需要使用.toupperCase（）方法将角色变量转换为所有大写字母。

输出将为：Sean Bowden: DEVELOPER.

解决方法

这可能会帮助您。

let firstName = "Sean"; 
let lastName = "Bowden"; 
let role = 'developer'; 
role = role.toUpperCase()

var msg = firstName + " " + lastName + ": " + role + ".";

或

    let firstName = "Sean"; 
    let lastName = "Bowden"; 
    let role = 'developer'; 

    var msg = firstName + " " + lastName + ": " + role.toUpperCase() + ".";

,

在这种情况下，请尝试使用：

var msg =fisrstname + " " + lastname + ": " + role.toUpperCase() + ".";

注意：toUpperCase()方法不会更改原始字符串。

提示：使用toLowerCase()方法将字符串转换为小写字母。

,

let firstName = "Sean";
let lastName = "Bowden";
let role = "developer".toUpperCase();
var msg = firstName + " " + lastName + ": " + role + ".";

console.log(msg);