A brief analysis of the common methods of getting and setting Select options in JQuery_jquery

1. Get the selected text:
$("#cusChildTypeId").find("option:selected").text();
$("#cusChildTypeId option :selected").text()

2. Get the selected value:
$("#ddlRegType ").val();

3. Get the selected index:
$("#ddlRegType ").get(0).selectedIndex;

4. Get the number of select items
$("#cusChildTypeId").get(0).options.length

5. Set select selected index:
$("#cusChildTypeId") .get(0).selectedIndex=index;//index is the index value

6. Set the selected value:
$("#cusChildTypeId").attr(" value","Normal");
$("#cusChildTypeId").val("Normal");
$("#cusChildTypeId").get(0).value = "Normal";

7. Set select selected text:
1>.var count=$("#cusChildTypeId").get(0).options.length;
for(var i=0;i                                                                            cusChildTypeId").get(0).options.selected = true;
              break;
2>.$("#cusChildTypeId").val(text);
$("#cusChildTypeId").change();


8. Add a Item, the display content is text, the value is value

$("#cusChildTypeId").get(0).options.add(new Option(text,value));

9. Delete items with value in select
var count = $("#cusChildTypeId").size();
for(var i=0;i                                                                                                                      remove(i); break;
}
}

10. Clear Select:

1>. .empty ();
2>. $("#cusChildTypeId").get(0).options.length = 0;