我创建了一个程序,您可以在其中通过选中复选框来选择一组图像。图像 URL 和替代文本存储在两个数组中。单击 HTML 页面上的 av 按钮时,您会打开一个新窗口,该窗口使用 window.opener 调用数组。
关闭新窗口时,我想清空数组。否则第一轮选择的图片在第二次打开时会显示在幻灯片中。我知道您可以通过这种方法清空数组:array.length= 0;
但是我在哪里添加代码?我很迷茫。我正在粘贴代码,也许有人可以帮我一把。
var imgUrlList = [], imgTextList = [], //These arrays need to be emptied
windVar = null;
function init() {
var tags, i, openWindow;
tags = document.getElementsByClassName("unmarkedImg");
openWindow = document.getElementById("slideShowBtn");
openWindow.onclick = savePicsForSlideshow;
for (i = 0; i < tags.length; i++) {
tags[i].parentNode.onmouseover = showLargePict;
tags[i].parentNode.onmouseout = hideLargePict;
}
}
window.onload = init;
function showLargePict() {
var largePictTagDiv = this.getElementsByClassName("innerBox")[0];
var largePictTagParentDiv = largePictTagDiv.parentNode;
var imgTag = largePictTagParentDiv.getElementsByTagName('img')[0];
var checkBoxlargePict = largePictTagDiv.getElementsByTagName('input')[0];
if (checkBoxlargePict.checked)
imgTag.className = "markedImg";
else imgTag.className = "unmarkedImg";
largePictTagDiv.style.visibility = "visible";
} // End showLargePict
function hideLargePict() {
var largePictTag;
largePictTag = this.getElementsByClassName("innerBox")[0];
largePictTag.style.visibility = "hidden";
}
function savePicsForSlideshow() {
var innerBoxes = document.getElementsByClassName("innerBox");
for (i = 0; i < innerBoxes.length; i++) {
checkBoxlargePict = innerBoxes[i].getElementsByTagName('input')[0];
if (checkBoxlargePict.checked) {
var imgTagSrc = innerBoxes[i].getElementsByTagName('img')[0].src;
imgUrlList.push(imgTagSrc);
var spanTagText = innerBoxes[i].getElementsByTagName('span')[0].innerHTML;
imgTextList.push(spanTagText);
}
}
if (imgTextList.length > 0) {
newWindow(500, 600, "slideshow.htm");
}
}
function newWindow(width, height, filename) {
var windowProperties;
windowProperties = "top=100,left=100,toolbar=no,location=no,status=no,menubar=no,scrollbars=no,resizable=no,width=" + width + ",height=" + height;
if (windVar != null) if (windVar.closed == false) windVar.close();
windVar = window.open(filename, "", windowProperties);
}
请原谅我的编程和英语语法缺陷。我是 JavaScript 新手。//Henrik,瑞典哥德堡。