是否有一个简单的方法来转换字符串标题大小写?例如，约翰·史密斯变成了约翰·史密斯。我不是在寻找像John Resig的解决方案那样复杂的东西，只是(希望)一些一两行代码。
当前回答
试试这个:
function toTitleCase(str) str归来。replace ( - w \ S * / g, 功能(. txt) { 归来txt.charAt(0). toupfaith (+ txt.substr) 的 ); 的 < form > 输入: <br /><textarea" > < / textarea > < br / >输出: <br /><textarea" > < / textarea > < / form >
其他回答
如果你想使用NPM库，请查看title-case:
安装:
npm install title-case --save
用法:
import { titleCase } from "title-case";
titleCase("string"); //=> "String"
titleCase("follow step-by-step instructions"); //=> "Follow Step-by-Step Instructions"
这个解决方案将标点符号考虑到新句子中，处理引用，将小词转换为小写，忽略首字母缩写或全大写单词。
var stopWordsArray = new Array("a", "all", "am", "an", "and", "any", "are", "as", "at", "be", "but", "by", "can", "can't", "did", "didn't", "do", "does", "doesn't", "don't", "else", "for", "get", "gets", "go", "got", "had", "has", "he", "he's", "her", "here", "hers", "hi", "him", "his", "how", "i'd", "i'll", "i'm", "i've", "if", "in", "is", "isn't", "it", "it's", "its", "let", "let's", "may", "me", "my", "no", "of", "off", "on", "our", "ours", "she", "so", "than", "that", "that's", "thats", "the", "their", "theirs", "them", "then", "there", "there's", "these", "they", "they'd", "they'll", "they're", "they've", "this", "those", "to", "too", "try", "until", "us", "want", "wants", "was", "wasn't", "we", "we'd", "we'll", "we're", "we've", "well", "went", "were", "weren't", "what", "what's", "when", "where", "which", "who", "who's", "whose", "why", "will", "with", "won't", "would", "yes", "yet", "you", "you'd", "you'll", "you're", "you've", "your");
// Only significant words are transformed. Handles acronyms and punctuation
String.prototype.toTitleCase = function() {
var newSentence = true;
return this.split(/\s+/).map(function(word) {
if (word == "") { return; }
var canCapitalise = true;
// Get the pos of the first alpha char (word might start with " or ')
var firstAlphaCharPos = word.search(/\w/);
// Check for uppercase char that is not the first char (might be acronym or all caps)
if (word.search(/[A-Z]/) > 0) {
canCapitalise = false;
} else if (stopWordsArray.indexOf(word) != -1) {
// Is a stop word and not a new sentence
word.toLowerCase();
if (!newSentence) {
canCapitalise = false;
}
}
// Is this the last word in a sentence?
newSentence = (word.search(/[\.!\?:]['"]?$/) > 0)? true : false;
return (canCapitalise)? word.replace(word[firstAlphaCharPos], word[firstAlphaCharPos].toUpperCase()) : word;
}).join(' ');
}
// Pass a string using dot notation:
alert("A critical examination of Plato's view of the human nature".toTitleCase());
var str = "Ten years on: a study into the effectiveness of NCEA in New Zealand schools";
str.toTitleCase());
str = "\"Where to from here?\" the effectivness of eLearning in childhood education";
alert(str.toTitleCase());
/* Result:
A Critical Examination of Plato's View of the Human Nature.
Ten Years On: A Study Into the Effectiveness of NCEA in New Zealand Schools.
"Where to From Here?" The Effectivness of eLearning in Childhood Education. */
我用正则表达式回答。
更多regex信息:https://regex101.com/r/AgRM3p/1
function toTitleCase(string = '') { const regex = /^[a-z]{0,1}|\s\w/gi; string = string.toLowerCase(); string.match(regex).forEach((char) => { string = string.replace(char, char.toUpperCase()); }); return string; } const input = document.getElementById('fullname'); const button = document.getElementById('button'); const result = document.getElementById('result'); button.addEventListener('click', () => { result.innerText = toTitleCase(input.value); }); <!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <meta http-equiv="X-UA-Compatible" content="IE=edge"> <meta name="viewport" content="width=device-width, initial-scale=1.0"> <title>Test</title> </head> <body> <input type="text" id="fullname"> <button id="button">click me</button> <p id="result">Result here</p> <script src="./index.js"></script> </body> </html>
使用正则表达式的一行程序，获取单词\b[A- za -z]的所有\g开头字符，并应用.toUpperCase()
const textString = "用Javascript将字符串转换为标题大小写。"; const convert = textString。替换(/ \ [a-zA-Z] b / g,(比赛)= > match.toUpperCase ()); console.log(转换)
你可以立即toLowerCase字符串，然后只是toUpperCase每个单词的第一个字母。变成了非常简单的一行:
函数titleCase(str) { 返回str.toLowerCase()。/\b\w/g, s => s. touppercase ()); ｝ console.log (titleCase(‘钢铁侠’); console.log (titleCase(“绿巨人”);
