完善

src/app/pages/left-domain/left-domain.component.ts

@@ -210,14 +210,14 @@ export class LeftDomainComponent implements OnInit {
   //是否换行
   isLineFeed(str: string):boolean {
     if (str) {
-      let strlen = 0;
+      let strlen = 0; 
       for (var i = 0;i < str.length; i++) {
         if(str.charCodeAt(i) > 255) //如果是汉字，则字符串长度加2
         strlen += 2;
         else
         strlen++;
       }
-      if (strlen >= 16) {
+      if (strlen > 17) {
         return false
       } else {
         return true