去除字符串内所有空格【在CodeWars中实践】The Hashtag Generator

参考：https://www.cnblogs.com/a-cat/p/8872498.html

 

   去除字符串内所有的空格：str = str.replace(/\s*/g,"");

　　去除字符串内两头的空格：str = str.replace(/^\s*|\s*$/g,"");   或者   str.trim();

　　去除字符串内左侧的空格：str = str.replace(/^\s*/,"");

　　去除字符串内右侧的空格：str = str.replace(/(\s*$)/g,"");

 

题目：（https://www.codewars.com/kata/52449b062fb80683ec000024/train/javascript）

The marketing team is spending way too much time typing in hashtags.
Let's help them with our own Hashtag Generator!

Here's the deal:

• It must start with a hashtag (#).
• All words must have their first letter capitalized.
• If the final result is longer than 140 chars it must return false.
• If the input or the result is an empty string it must return false.

Examples

" Hello there thanks for trying my Kata"  =>  "#HelloThereThanksForTryingMyKata"
"    Hello     World   "                  =>  "#HelloWorld"
""                                        =>  false

 

排在最前的大佬的解答：

function generateHashtag (str) {
  return str.length > 140 || str === '' ? false :
    '#' + str.split(' ').map(capitalize).join('');   
}

function capitalize(str) {
  return str.charAt(0).toUpperCase() + str.slice(1);
}