search

Home >Web Front-end >JS Tutorial >Javascript Chinese character byte judgment_form special effects

Javascript Chinese character byte judgment_form special effects

WBOY
WBOYOriginal
2016-05-16 18:48:461035browse
Copy code The code is as follows:

function checkstr(str) {
num=str.length
var arr=str.match(/[^\\\\\\\\x00-\\\\\\\\x80]/ig)
if(arr!=null)num =arr.length
return num
}

function CheckUserName(UserName) {
if(checkstr(UserName) > 30 || checkstr(UserName) < 4) {

} else {

}
}

Javascript’s length() considers a Chinese character or a letter to be 1 byte. This function can determine whether a Chinese character is 2 characters. Festival.
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：Javascript study notes error handling_javascript skillsNext article：Javascript study notes error handling_javascript skills

Related articles

See more