字符长度超出后,
cutString = (str, len) => {
//length属性读出来的汉字长度为1
if(str.length*2 <= len) {
return str;
}
var strlen = 0;
var s = "";
for(var i = 0;i < str.length; i++) {
s = s + str.charAt(i);
if (str.charCodeAt(i) > 128) {
strlen = strlen + 2;
if(strlen >= len){
return s.substring(0,s.length-1) + "...";
}
} else {
strlen = strlen + 1;
if(strlen >= len){
return s.substring(0,s.length-2) + "...";
}
}
}
return s;
}