在这个 ER 图中,我们定义了一个名为STRING的实体,它包含四个属性:original、lowerCase、upperCase和capitalized。这些属性分别表示原始字符串及其三种不同的大小写形式。 小结 到目前为止,我们探讨了字符串大小写转换在 JavaScript 中的重要性和实现方式。通过使用内置方法toLowerCase()和toUpperCase(),我们可以轻松地进行...
AI代码解释 // capitalize :: String -> Stringvarcapitalize=function(s){returntoUpperCase(head(s))+toLowerCase(tail(s));}capitalize("smurf");//=> "Smurf"复制代码 这里的capitalize接受一个String并返回了一个String。这里我们不关心实现函数过程,我们只关注它的类型签名 在Hindley-Milner系统中,函数都写成...
convertNames :: [String] -> [Object] 这里面涉及到一个 String -> Object 的转换,那我需要有这么个函数实现这种转换: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 convert2Obj :: String -> Object 至于这种转换,可以轻松想到需要两个函数完成: capitalizeName:把名称转换成指定形式 genObj:把任意类...
To capitalize the first letter of a string in JavaScript:Use the charAt() function to isolate and uppercase the first character from the left of the string. Use the slice() method to slice the string leaving the first character. Concatenate the output of both functions to form a capitalized...
There is a number of ways to capitalize the first letter of the string in JavaScript. For example: "this is an example"->"This is an example" "the Atlantic Ocean"->"The Atlantic Ocean" ThetoUpperCase()method transforms all letters in a string to uppercase; we will use it in com...
function capitalize(name) { return `${name.slice(0, 1).toUpperCase()}${name.slice(1)}`;}function greet(name) { return `Hello ${capitalize(name)}!`;}const str = greet('wOrLd');typeof str; // "string"str; // "Hello World!"使用自定义类 请记住，JavaScript 表达式的计算结果是一...
To capitalize the first letter in a string is easy if you undertake some steps.First of all you should get the first letter of the string by setting the charAt() method at 0 index:Javascript charAt method1 2 let string = "w3docs.com"; console.log(string.charAt(0)); // Returns...
1. What is the purpose of the capitalize function in JavaScript? To convert a string to uppercase To capitalize the first letter of a string To reverse a string To trim whitespace from a string Show Answer 2. Which method is used to add the capitalize function to the String prototype?
constcapitalize =str=>str.charAt(0).toUpperCase() + str.slice(1); 示例: constgreeting ="hello";console.log(capitalize(greeting));// "Hello" 描述:这个单线大写了字符串的第一个字母。它提取第一个字符,将其转换为大写,并将其与字符串的其余...
if(string.charCodeAt(i)<128&&string.charCodeAt(i)>=0) { count++; }else{ count+=2; } } } 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 获取字符串的像素长度(显示宽度) 字符串的像素长度,即字符串在页面中的显示宽度,和页面css的 fontSize fontFamily有关。