用js实现键盘方向键翻页功能的代码

网络编程 2024/10/14 佚名

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今天从网上看到这个功能,不错啊,以后就可以在文章中,增加这个功能了
var re = /<a href=[\"\']?([-=\w\.\/\?]+)[\"\']?>[\[$<]?上一页[\]$>]?<\/a>/igm;
if (window.document.body.innerHTML.search(re) >= 0) {
  var PREVIOUS_PAGE = RegExp.$1;
}
如果搜下到"上一页",则定义var PREVIOUS_PAGE = RegExp.$1;
var re = /<a href=[\"\']?([-=\w\.\/\?]+)[\"\']?>[\[$<]?下一页[\]$>]?<\/a>/igm;
if (window.document.body.innerHTML.search(re) >= 0) {
  var NEXT_PAGE = RegExp.$1;
}
如果搜下到"下一页",则定义var NEXT_PAGE = RegExp.$1;
if (typeof PREVIOUS_PAGE == "string" || typeof NEXT_PAGE == "string") {
  document.onkeydown = function() {
    switch (event.srcElement.tagName) {
        case "INPUT":
        case "TEXTAREA":
        case "SELECT":
          break;
        default:
          if (event.keyCode == 37 /* Arrow Left*/ && typeof PREVIOUS_PAGE == "string") {
            window.location.href = PREVIOUS_PAGE;
          }
          else if (event.keyCode == 39 /* Arrow Right */ && typeof NEXT_PAGE == "string") {
            window.location.href = NEXT_PAGE;
          }
    }
  }
}

用js实现键盘方向键翻页功能的代码