我有一份注册表,其中包含一些与客户相关的信息。如果用户表单已填满一半且用户要关闭选项卡,则会选择“保存并退出”退出弹出窗口,然后退出。
我有一些jquery解决方案。但现在有一天它并不适用于所有浏览器。
Jquery示例代码:
'use strict';
$(document).ready(function() {
$.fn.addEvent = function (obj, evType, fn) {
if (obj.addEventListener) {
obj.addEventListener(evType, fn, false);
return true;
} else if (obj.attachEvent) {
var r = obj.attachEvent('on'+evType, fn);
return r;
} else {
return false;
}
};
$.fn.KeepOnPage = function (e) {
var doWarn = 1;
if (!e) {
e = window.event;
}
if (!e) {
return;
}
if (doWarn == 1) { // and condition whatever you want to add here
e.cancelBubble = true;
e.returnValue = 'Warning!\n\nNavigating away from this page will delete your text if you haven\'t already saved it.';
}
if (e.stopPropagation) {
e.stopPropagation();
}
};
$.fn.addEvent(window, 'beforeunload', $.fn.KeepOnPage);
});
但我们需要在reactjs中解决。是否有任何反应库供浏览器卸载?
谢谢, Thangadurai
答案 0 :(得分:4)
您可以添加和删除事件监听器,以便' beforeunload' componentDidMount和componentWillUnmount生命周期函数中的事件。
https://facebook.github.io/react/docs/component-specs.html
https://developer.mozilla.org/en-US/docs/Web/Events/beforeunload
示例:
...
componentDidMount() {
window.addEventListener('beforeunload', this.keepOnPage);
}
componentWillUnmount() {
window.removeEventListener('beforeunload', this.keepOnPage);
}
keepOnPage(e) {
var message = 'Warning!\n\nNavigating away from this page will delete your text if you haven\'t already saved it.';
e.returnValue = message;
return message;
}
....