JavaScript Regular Expression Validation Chinese instance tutorial _ Regular expression

JavaScript often validates Chinese, offering two examples:
JavaScript code:

Copy Code code as follows:

/**
*a Simple Example
*/
function Ischinese (temp) {
var re =/[^u4e00-u9fa5]/;
if (re.test (temp)) return false;
return true;
}
<p>/**
* Verify that the string is Chinese
* Return value:
* If NULL, define checksum pass, return True
* If the string is Chinese, check pass, return True
* If the string is not Chinese, return false reference message: Must be Chinese!
*/
function Ischinese2 (str) {
If the value is null, pass the checksum
if (str = = "") return true;
var pattern =/^ ([u4e00-u9fa5]|[ UFE30-UFFA0]) *$/gi;
if (Pattern.test (str)) return true;
return false;
}