function LineCateCollection(name) {

	this.name = name;

	this.length = 0;

	this.add = addLineCate;

	return this;

}

function addLineCate(object) {



	this.length++;

	this[this.length] = object

}

function LineCateNode(id,name) {

	this.id = id;

	this.name = name;

	return this;

}

function extractLineCateChildrenOf(node,arr) {

	var children = new LineCateCollection(node);

	var currentIndex = 1;

	while (currentIndex <= arr.length) {

        //arr[currentIndex].id.startWith(node) &&
                if (arr[currentIndex].id.substring(0,node.length)==node && arr[currentIndex].id.length==(node.length+3) ) {

                  children.add(arr[currentIndex])
                }

		currentIndex++
        }

	return children;

}
linecates=new LineCateCollection("C");


    linecates.add(new LineCateNode("C003","国际"))
    
    linecates.add(new LineCateNode("C002","国内"))
    
    linecates.add(new LineCateNode("C001","海南"))