1. 获取字符串长度
test = 'hello world'
1) python
res = len(test)
2) js
res = test.length
2. 字符串反转
test = 'hello world'
1) python
res = test[::-1]
2) js
res = test.split('').reverse().join('')
3. 去除前后空格
test = ' hello world '
1) python
res = test.strip()
2) js
res = test.trim()
4. 去除所有空格
test = ' hello world '
1) python
方法1：使用replace
res = test.replace(' ', '')
方法2：使用正则表达式
import re
pattern = re.compile(' ')
res = re.sub(pattern, '', test)
2) js
res= test.replace(/\s+/g, '')
标签：python,res,js,test,字符串,world,hello From： https://www.cnblogs.com/codeshr/p/17057908.html