Javascript 将每个单词的第一个字母大写
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Capitalize the first letter of every word
提问by David
I want to use a javascript function to capitalize the first letter of every word
我想使用 javascript 函数将每个单词的第一个字母大写
eg:
例如：
THIS IS A TEST ---> This Is A Test
this is a TEST ---> This Is A Test
this is a test ---> This Is A Test
What would be a simple javascript function
什么是简单的 javascript 函数
回答by Stephen
Here's a little one liner that I'm using to get the job done
这是我用来完成工作的一个小衬垫
var str = 'this is an example';
str.replace(/\b./g, function(m){ return m.toUpperCase(); });
but John Resig did a pretty awesome script that handles a lot of cases http://ejohn.org/blog/title-capitalization-in-javascript/
但是 John Resig 做了一个非常棒的脚本，可以处理很多情况 http://ejohn.org/blog/title-capitalization-in-javascript/
Update
更新
ES6+ answer:
ES6+ 答案：
str.split(' ').map(s => s.charAt(0).toUpperCase() + s.slice(1)).join(' ');
str.split(' ').map(s => s.charAt(0).toUpperCase() + s.slice(1)).join(' ');
There's probably an even better way than this. It will work on accented characters.
可能还有比这更好的方法。它将适用于重音字符。
回答by reader_1000
function capitalizeEachWord(str)
{
var words = str.split(" ");
var arr = [];
for (i in words)
{
temp = words[i].toLowerCase();
temp = temp.charAt(0).toUpperCase() + temp.substring(1);
arr.push(temp);
}
return arr.join(" ");
}
回答by Andrew D.
"tHiS iS a tESt".replace(/[^\s]+/g, function(str){
return str.substr(0,1).toUpperCase()+str.substr(1).toLowerCase();
});
Other variant:
其他变体：
"tHiS iS a tESt".replace(/(\S)(\S*)/g, function( function capitalize(str){
var strArr = str.split(" ");
var newArr = [];
for(var i = 0 ; i < strArr.length ; i++ ){
var FirstLetter = strArr[i].charAt(0).toUpperCase();
var restOfWord = strArr[i].slice(1);
newArr[i] = FirstLetter + restOfWord;
}
return newArr.join(' ');
}
,,){
return .toUpperCase()+.toLowerCase();
});
回答by DefionsCode
This is a simple solution that breaks down the sentence into an array, then loops through the array creating a new array with the capitalized words.
这是一个简单的解决方案，将句子分解成一个数组，然后循环遍历该数组，创建一个包含大写单词的新数组。
'hello kitty'.capitalize() -> 'Hello kitty'
'hello kitty'.capitalize(true) -> 'Hello Kitty'
回答by andersh
If you don't mind using a library, you could use Sugar.jscapitalize()
如果你不介意使用库，你可以使用Sugar.js capitalize()
capitalize( all = false )Capitalizes the first character in the string and downcases all other letters. If all is true, all words in the string will be capitalized.
capitalize( all = false )将字符串中的第一个字符大写，并将所有其他字母小写。如果全部为真，则字符串中的所有单词都将大写。
Example:
例子：
function Ucwords(str){
var words = str.split(' ');
var arr = [];
words.filter(function(val){
arr.push(val.charAt(0).toUpperCase()+ val.substr(1).toLowerCase());
})
console.log(arr.join(" ").trim());
return arr.join(" ").trim();
}
Ucwords("THIS IS A TEST") //This Is A Test
Ucwords("THIS ") //This
回答by VIJAY P
you can also use below approach using filter:
您还可以使用过滤器使用以下方法：
function capitalize(str){
str = str.toLowerCase();
return str.replace(/([^ -])([^ -]*)/gi,function(v,v1,v2){ return v1.toUpperCase()+v2; });
}
回答by Lunfel
This will capitalize every word seperated by a space or a dash
这将使由空格或破折号分隔的每个单词大写
function ucwords (str) {
return (str + '').replace(/^([a-z])|\s+([a-z])/g, function () {
return .toUpperCase();
});
}
Examples :
例子 ：
- i lOvE oRanges => I Love Oranges
- a strAnge-looKing syntax => A Strange-Looking Syntax
- 我爱橙子 => 我爱橙子
- 一个看起来很奇怪的语法 => 一个看起来很奇怪的语法
etc
等等
回答by oezi
take a look at ucwords from php.js- this seems to be kind of what you're looking for. basically, it's:
看看来自 php.js 的 ucwords- 这似乎是你正在寻找的东西。基本上，它是：
var oldstring = "THIS IS A TEST";
var newstring = ucwords(oldstring.toLowerCase());
note that THIS IS A TESTwill return THIS IS A TESTso you'll have to use it like this:
请注意，THIS IS A TEST它将返回，THIS IS A TEST因此您必须像这样使用它：
function ucwords (str) {
str = (str + '').toLowerCase();
return str.replace(/^([a-z])|\s+([a-z])/g, function () {
return .toUpperCase();
});
}
var oldstring = "THIS IS A TEST";
var newstring = ucwords(oldstring); // This Is A Test
or modify the function a bit:
或者稍微修改一下函数：
##代码##