Posted in Javascript onMay 02, 2014
<!doctype html> <html lang="cn"> <head> <meta charset="UTF-8"> <meta name="Keywords" content=""> <meta name="Description" content=""> <title>js离开当前页面前判断条件提示是否要离开页面</title> <script type="text/javascript"> window.onbeforeunload = function() { var unloads = document.getElementById("unloads").value; if(unloads == null || unloads == ""){ return "您确定要退出页面吗?"; } } </script> </head> <body> <input type="text" id="unloads" name="unloads" value="" /> </body> </html>
离开当前页面前使用js判断条件提示是否要离开页面
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