网址判断
思路应该是对 URL的组成部分 分别进行校验
- protocol
- domain name
- port
- path (不用校验)
- params
- anchor (不用校验)
代码:
1、使用组成部分判断
const isUrl = urlStr => {
try {
const { href, origin, host, hostname, pathname } = new URL(urlStr)
return href && origin && host && hostname && pathname && true
} catch (e) {
return false
}
}
2、正则
function validURL(url) {
const reg = /^(https?|ftp):\/\/([a-zA-Z0-9.-]+(:[a-zA-Z0-9.&%$-]+)*@)*((25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9][0-9]?)(\.(25[0-5]|2[0-4][0-9]|1[0-9]{2}|[1-9]?[0-9])){3}|([a-zA-Z0-9-]+\.)*[a-zA-Z0-9-]+\.(com|edu|gov|int|mil|net|org|biz|arpa|info|name|pro|aero|coop|museum|[a-zA-Z]{2}))(:[0-9]+)*(\/($|[a-zA-Z0-9.,?'\\+&%$#=~_-]+))*$/
return reg.test(url)
}