trim

+if (!String.prototype.trim) {
+    String.prototype.trim = function () {
+        return this.replace(/^[\s\uFEFF\xA0]+|[\s\uFEFF\xA0]+$/g, '');
+    };
+}
+
 // 速度数据
 var errReporter = require('./err-reporter');
 var speed = require('./speed');