Discussion on the problem of character length limit in js_Basic knowledge

Copy code The code is as follows:

var fun = function(str){
var preg = new RegExp("[u4e00-u9fa5] ","gi");
var preg2 = new RegExp("[^u4e00-u9fa5]","gi");
var count = 0;
for (var i=0;iif(preg.test(str[i])){
count = count 2;
}else{
count = count 1;
}
}
return count;
}