Ajax returns a Data Group to process the data group.

For Ajax response, there is no method to directly return data sets, so I just thought of a simple method. If there is a better method, hope to leave some points.

 

1. on the server side (PHP), we can use the following to export data. Here I use the data records of the two fields.

$ Id = $ _ Get ['id'];

$ Cate = $ db-> getall ("select ID, name from product_category where parentid =". $ id );

Foreach ($ cate as $ key => $ I ){

Echo $ I ['id']. ",". $ I ['name']. "| ";

}

2. In JS runtime, I use the get method.

VaR STR = XMLHTTP. responsetext;

Incate = Str. Split ("| ");

For (VAR I = 0; I <incate. Length/2; I ++ ){

VaR eloptnew = Document. createelement ('option ');

VaR T = new array ();

T = incate [I]. Split (",");

Eloptnew. Text = T [1];

Eloptnew. value = T [0];

Sel. Add (eloptnew );

}

In this case, the Select menu of zookeeper is separated by two JS split methods to cut the string.