trim
正则表达式-实现 trim(str)方法,过滤字符串首尾空白
function trim(str) {
return str.replace(/^\s+|$\s+/g, '')
}
let r = trim(' abc123 ')
console.log(r)
正则表达式-实现 trim(str)方法,过滤字符串首尾空白
function trim(str) {
return str.replace(/^\s+|$\s+/g, '')
}
let r = trim(' abc123 ')
console.log(r)