Array multifunction Splice () method Insert, delete, replace

Multifunction splice () Insert, delete, replace

  <script type= "Text/javascript" >         var arr=[' A ', ' B ', ' C ', ' D ', ' E ', ' F ', ' G '];         Arr.splice (3, 2, ' apples ', ' grapes ');  Replace some items         console.log (arr);     </script>

  <script type= "Text/javascript" >         //  change some items         var arr=[' A ', ' B ', ' C ', ' d ', ' e ', ' F ', ' G ']         arr.splice (3,2, ' x ', ' y ', ' x ', ' Password ');//Change some items         console.log (arr);     </script>

<script type= "Text/javascript" >         var arr=[' A ', ' B ', ' C ', ' d ', ' e ', ' f ', ' G ']            arr.splice (2, 1, ' haha '); // change an item             Console.log (arr);     </script>

  <script type= "Text/javascript" >         var arr=[' A ', ' B ', ' C ', ' d ', ' e ', ' f ', ' G '];         Arr.splice (/// Nothing can be replaced, delete          console.log (arr) directly;     </script>

    <script type= "Text/javascript" >         var arr=[' A ', ' B ', ' C ', ' d ', ' e ', ' f ', ' G '];         Arr.splice (2);         Console.log (arr);     </script>

    <script type= "Text/javascript" >         var arr=[' A ', ' B ', ' C ', ' d ', ' e ', ' f ', ' G '];         Arr.splice (// Insert some item          console.log (arr);     </script>

Second, case: Delete array last five items

    <script type= "Text/javascript" >         // Delete array last five items         var arr[' A ', ' B ', ' C ', ' d ', ' e ', ' F ', ' G '];         Arr.pop ();         Arr.pop ();         Arr.pop ();         Arr.pop ();         Arr.pop ();          // simplified to          for (var i=0; i<arr.length; i++;) {            arr[i].pop ();         }          // can also         Arr.splice ( -5);         Console.log (arr);     </script>

Array multifunction Splice () method Insert, delete, replace