optimize display style when text is too long

src/filters/textLimit.js

@@ -0,0 +1,19 @@
+export default function (value, maxLength) {
+    let length = 0;
+
+    for (let i = 0; i < value.length; i++) {
+        const c = value.charCodeAt(i);
+
+        if ((c >= 0x0001 && c <= 0x007e) || (0xff60 <= c && c <= 0xff9f)) {
+            length++;
+        } else {
+            length += 2;
+        }
+    }
+
+    if (length <= maxLength || maxLength <= 3) {
+        return value;
+    }
+
+    return value.substr(0, maxLength - 3) + '...';
+}