Javascript会显示多个图像而不是一个

Question

我正在编写一个函数,当被调用时会打印7次相同的图像.调用函数时,我在参数中传递0.这是功能:

function showCards(numcards) {
  while (numcards < 7) {
    var data = ""
    data += "<td><img src='http://www.biogow.com/images/cards/gbCard52.gif' NAME='card0' ></td>"
    numcards = numcards + 1
  }
  return (data)
}

但是,调用此函数时,它只打印一个图像.我如何才能打印所有七个？有任何想法吗？谢谢!

Answer 1

放在var data = ""循环的外面.按原样,它会在每次迭代时重置.

function showCards(numcards)
{
    var data = ""
    while (numcards < 7)
    {
        data += "<td><img src='http://www.biogow.com/images/cards/gbCard52.gif' NAME='card0' ></td>"
        numcards = numcards + 1
    }
    return (data)
}