Verify whether the form is Chinese through regular expressions_javascript skills

The JavaScript form verifies whether it is Chinese and determines whether an input is Chinese, which is implemented through regular expressions.

Copy code The code is as follows:

// Check whether it is Chinese
function isChn( str){
var reg = /^[u4E00-u9FA5] $/;
if(!reg.test(str)){
return false;
}
return true;
}