Javascript HostListener和event.target
早上好,我遇到了一个奇怪的问题,我试图找到一个解决方案,但没有;/我有3个锚元素,每个元素都有“navi start”类,如下所示Javascript HostListener和event.target,javascript,angular,typescript,Javascript,Angular,Typescript,早上好,我遇到了一个奇怪的问题,我试图找到一个解决方案,但没有;/我有3个锚元素,每个元素都有“navi start”类,如下所示 <a class="navi-start test-class"><i class="fab fa-accessible-icon"></i>x</a> <a class="navi-start"><i class="fab fa-accessible-icon"></i>y&
<a class="navi-start test-class"><i class="fab fa-accessible-icon"></i>x</a>
<a class="navi-start"><i class="fab fa-accessible-icon"></i>y</a>
<a class="navi-start"><i class="fab fa-accessible-icon"></i> z</a>
}
log(targetElement)只返回icon元素。
有人能告诉我如何解决我的问题吗?您似乎正在收听整个文档中的点击
@HostListener('document:click' ...
我建议尝试缩小范围,如果可能的话,可以监听“click”,这会将侦听器限制在该指令所在的元素上
您的函数将接收单击事件。每个事件的目标都是被单击的实际元素,因此,如果单击图标,您将获得图标
您可以做的是检查元素是否与您期望的匹配,如果不匹配,则遍历dom以找到匹配的父元素。从而捕获预期目标内部的点击。因此,如果您单击该图标,您仍然可以在锚定标记上找到匹配项。像这样:
CheckClick(event) {
let targetElement = event.target as Element; //changed to let
const textElement = targetElement.textContent;
const query = document.querySelector('.test-class');
if (!targetElement.matches('.navi-start')) { //if clicked element doesn't have class '.navi-start'
targetElement = targetElement.closest('.navi-start') as Element; // find parent that has class 'navi-start'
}
if (targetElement) { //if targetElement of type 'navi-start' was found
this.rend.removeClass(query, 'test-class');
this.rend.addClass(targetElement, 'test-class');
if (textElement === 'x') {
this.router.navigate(['main']);
}
else if (textElement === 'y') {
this.router.navigate(['main/parts']);
}
else {
this.router.navigate(['main/motorcycle']);
}
}
else {
console.log(targetElement);
}
}
总之,我找到了最简单的方法,只使用角度指令,而不使用任何方法
<a class="navi-start" [routerLink]="['/main']" routerLinkActive="test-class" [routerLinkActiveOptions]="{ exact: true }"><i class="fab fa-accessible-icon" ></I>x</a>
<a class="navi-start" routerLink="parts" routerLinkActive="test-class"><i class="fab fa-accessible-icon" ></i>y</a>
<a class="navi-start" routerLink="motorcycle" routerLinkActive="test-class"><i class="fab fa-accessible-icon" ></i>z</a>
x
Y
Z
<a class="navi-start" [routerLink]="['/main']" routerLinkActive="test-class" [routerLinkActiveOptions]="{ exact: true }"><i class="fab fa-accessible-icon" ></I>x</a>
<a class="navi-start" routerLink="parts" routerLinkActive="test-class"><i class="fab fa-accessible-icon" ></i>y</a>
<a class="navi-start" routerLink="motorcycle" routerLinkActive="test-class"><i class="fab fa-accessible-icon" ></i>z</a>