ACh*_*han 4 javascript setinterval cleartimeout angular
我必须在我的应用程序中检测用户的空闲超时。我的应用程序同时使用本机 JavaScript 和 Angular。在我的 HTML + JavaScript 页面中,我实现如下:
<script>
var inactivityTime = function () {
var time;
document.onmousemove = resetTimer;
document.onkeypress = resetTimer;
document.onclick = resetTimer;
document.onwheel = resetTimer;
function callApi() {
alert("Idle for 3 seconds. You can call your api here");
}
function resetTimer() {
clearTimeout(time);
time = setTimeout(callApi, 3000);
// 5 minute = 60000 * 5;
// 1000 milliseconds = 1 second
}
};
window.onload = function() {
inactivityTime();
}
</script>
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它正在按预期工作。
虽然我在角度项目中使用的相同,角度代码也可以工作,但观察到 1 个小问题,请先查看我的角度代码:
import { Component, OnInit } from '@angular/core';
@Component({
selector: 'app-root',
templateUrl: './app.component.html',
styleUrls: ['./app.component.css']
})
export class AppComponent {
title = 'project';
time;
ngOnInit() {
this.inactivityTime();
this.resetTimer();
}
inactivityTime() {
document.onmousemove = this.resetTimer;
document.onkeypress = this.resetTimer;
document.onclick = this.resetTimer;
document.onwheel = this.resetTimer;
}
resetTimer() {
clearTimeout(this.time);
this.time = setTimeout(() => {
alert('Idle for 3 seconds. You can call your api here');
}, 3000);
}
}
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我面临的问题是 - 在页面加载时,即使我移动鼠标/按键,也会调用警报。之后一切都按预期进行。但在页面加载时它不起作用。
在此请求帮助。
谢谢你!
The best approach is to use Angular HostListener decorator and bind it to document:
export class AppComponent {
time: number;
ngOnInit() {
this.resetTimer();
}
@HostListener('document:mousemove')
@HostListener('document:keypress')
@HostListener('document:click')
@HostListener('document:wheel')
resetTimer() {
clearTimeout(this.time);
this.time = setTimeout(() => {
alert('Idle for 3 seconds. You can call your api here');
}, 3000);
}
}
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Here is solution in stackblitz
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