select中，动态增加option 并设置当前选中值

function getActsFromMileStone(milestoneId){

var preId = getPrevNodeIdByLevel(milestoneId,-1);

var preData = getData(preId);

var activityAttr = preData['activityAttr'];

var activityName = preData['activityName'];

var actsArray = new Array();

actsArray.push(activityName);

while(activityAttr != '_milestone'){

var currentData = getData(milestoneId);

milestoneId = preId;

preId = getPrevNodeIdByLevel(preId,-1);

preData = getData(preId);

activityAttr = preData['activityAttr'];

activityName = preData['activityName'];

if(activityAttr == '_milestone_b'){

activityName = preData['activityName'];

break;

} else if(activityAttr == null || activityAttr == 'undefined'){

activityName = currentData['activityName'];

}

actsArray.push(activityName);

}

return actsArray.join(",");

}

// 注意此方法中，一定要先取到当前节点，否则容易形成死循环，在jsp中，用var acts = treeGrid.getActsFromMileStone(data.activityID);

act = acts.split(",");

for(var i=0; i<act.length; i++){

$("<option value='"+(i+1)+"'>"+act[i]+"</option>").appendTo("#startActivity");

}，来往select中，动态增加option

也可用以下方法：

var selected = data.startActivity;

for(var i=act.length-1; i>=0; i--){

var str = act[i].split(":");

$("<option>",{val:str[0],text:str[1]}).appendTo("#startActivity");

}

$('#startActivity').attr("value",selected);

并将当前选中的行记住。