例子:在这里,toUpperCase()方法被调用str字符串,将所有小写字母转换为大写。得到的字符串,"HELLO WORLD", 被赋值给变量upperStr. Javascript conststr ="hello world";constupperStr = str.toUpperCase();console.log(upperStr);// Output: "HELLO WORLD" 输出 HELLO WORLD 注:amanv09...
示例2:在这个例子中,该方法toUpperCase()将所有小写字母转换为其等效的大写字母,而不影响特殊字符和数字。 JavaScript // JavaScript StringtoUpperCase() method// to convert string to Uppercasefunctionfunc(){// Original stringletstr ='It iS a 5r&:ampe@@t Day.'// String converted to Upper Caselets...
To convert a string to uppercase, we can use the built-in method in JavaScript. Here is an example that converts a string to uppercase…
(1)将所有的字符串内容变为大写字母 uppercaseString (2)将所有的字符串内容变为小写字母 lowercaseString (3)将单词的首字母小写变为大写字母 capitalizedString */NSString*str10=@"sayhelloworld";NSString*str11=[str10 uppercaseString];NSLog(@"str11:%@",str11);//(1)将所有的字符串内容变为大写字母...
JavaScript provides several built-in methods for manipulating strings, including one called toUpperCase() which can be used to convert the first letter of a string to uppercase.
This JavaScript tutorial explains how to use the string method called toUpperCase() with syntax and examples. In JavaScript, toUpperCase() is a string method that is used to convert a string to uppercase.
const str = "HELLO WORLD"; const lowercased = str.toLowerCase(); // "hello world" // toUpperCase():将字符串中的所有字符转换成大写字母。 const str = "hello world"; const uppercased = str.toUpperCase(); // "HELLO WORLD" // trim():去除字符串两端的空格,并返回新的字符串。 const st...
The toUpperCase() method returns the string converted to uppercase. Example const message = "javascript is fun"; // convert message to uppercase const upperMessage = message.toUpperCase(); console.log(upperMessage); // Output: JAVASCRIPT IS FUN Run Code toUpperCase() Syntax The syntax of ...
Learn how to convert a string to uppercase in JavaScript using the toUpperCase method. Understand its usage with examples and best practices.
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