search

Home >Web Front-end >JS Tutorial >JavaScript implements capitalization of English initial letters_javascript skills

JavaScript implements capitalization of English initial letters_javascript skills

WBOY
WBOYOriginal
2016-05-16 16:02:311590browse

Method 1: 

function replaceStr(str){ // 正则法
 str = str.toLowerCase();
 var reg = /\b(\w)|\s(\w)/g; //  \b判断边界\s判断空格
 return str.replace(reg,function(m){ 
  return m.toUpperCase()
 });
}

function replaceStr1(str){
 str = str.toLowerCase();
 var strTemp = ""; //新字符串
 for(var i=0;i<str.length;i++){
  if(i == 0){
   strTemp += str[i].toUpperCase(); //第一个
   continue;
  }
  if(str[i] == " " && i< str.length-1){ //空格后
   strTemp += " ";
   strTemp += str[i+1].toUpperCase();
   i++;
   continue;
  }
  strTemp += str[i];
 }
  return strTemp;
 }
 

var text = "abcd ABCD efGH";
console.log(replaceStr(text));//Abcd Abcd Efgh
console.log(replaceStr1(text));//Abcd Abcd Efgh

Method 2: 

<script type="text\javascript">
function ucfirst(str){
var str = str.toLowerCase();
var strarr = str.split(' ');
var result = '';
for(var i in strarr){
result += strarr[i].substring(0,1).toUpperCase()+strarr[i].substring(1)+' ';
}
return result;
}
</script>

Method 3: 

<script type="text\javascript">
function ucfirst(str) {
var str = str.toLowerCase();
str = str.replace(/\b\w+\b/g, function(word){
  return word.substring(0,1).toUpperCase()+word.substring(1);
});
return str; 
</script>

CSS to implement: 

<html>
 <head>
 <style type="text/css"> 
  h1 {text-transform: uppercase} 
  p.uppercase {text-transform: uppercase}   
  p.lowercase {text-transform: lowercase}  
  p.capitalize {text-transform: capitalize } 
 </style>
 </head>
 <body>
  <h1>This Is An H1 Element</h1>
   <p class="uppercase">This is a test.</p><p class="lowercase">This is a test.</p><p class="capitalize">This is a test.</p>
 </body>
</html>

The above is a summary of 4 ways to capitalize English initials. I hope you will like it.

Statement：
The content of this article is voluntarily contributed by netizens, and the copyright belongs to the original author. This site does not assume corresponding legal responsibility. If you find any content suspected of plagiarism or infringement, please contact admin@php.cn
Previous article：Summary of javascript array deduplication methods_javascript skillsNext article：Summary of javascript array deduplication methods_javascript skills

Related articles

See more