add

3_js基础/9_数组内置方法.html

@@ -37,6 +37,14 @@
         // var arr3 = str2.split("");
         // console.log(arr3);
 
+        // console.log(arr.includes(99));
+        // console.log(arr.indexOf(99));
+
+        // console.log(arr.reverse());
+
+        // console.log(arr.slice(2,6),arr)
+        console.log(arr.splice(2,1,'a','b','c'),arr)
+
     </script>
 </body>
 </html>