HTML网页表格可以上移一行下移一行的效果代码怎么写

更新时间：2025-01-20 01:45:04

function up(elem){

elem.parentNode.insertBefore(elem,elem.previous());

}

function down(elem){

elem.parentNode.insertBefore(elem,elem.next());

}

Node.prototype.previous=function(){

var node=this.previousSibling;

while(node.nodeType!=1

&& node.previousSibling)

node=node.previousSibling;

return node;

};

Node.prototype.next=function(){

var node=this.nextSibling;

while(node.nodeType!=1

&& node.nextSibling)

node=node.nextSibling;

return node;

};