导航条(Nav)在连接过多时,一部分会被隐藏掉,希望在激活指定的连接时,激活的连接会显示出来.通过调用:Nav.scroll(x,0)来进行横向移动。现在只有在FireFox中正常,Webkit内核的浏览器scoll无效
constructor(private elementRef: ElementRef, private renderer2: Renderer2) { }
ngOnInit(): void {
console.log('screen width:'+window.innerWidth);
//小屏幕导航时选中的元素在当前屏幕中可见
if(window.innerWidth < 767){
let nav:HTMLElement =this.elementRef.nativeElement.querySelector('#nav-tab')as HTMLElement;
if(!nav){
console.log('[appStickyScrollNavbar] not find element:#nav-tab');
}
let focEle:Element = nav.querySelector('a.active') as Element;
if(!focEle){
console.log('[appStickyScrollNavbar] not find active element:a.active');
}
let ofLeft:number = focEle.getBoundingClientRect().left;
let eleWidth:number = focEle.getBoundingClientRect().width;
console.log('[appStickyScrollNavbar]find active element client rect left:'+ofLeft);
console.log('[appStickyScrollNavbar]find active element width:'+eleWidth);
//FireFox
nav.scrollTo((ofLeft-eleWidth), 0);
}
}
隐藏的样式如下:
.tabbable .nav-tabs {
overflow-x: auto;
overflow-y:hidden;
flex-wrap: nowrap;
}
.tabbable .nav-tabs .nav-link {
white-space: nowrap;
margin:0;
padding:0 0.5rem
}
.tabbable .nav-tabs .nav-link.active{
border-bottom-color:#007bff;
background-color:#f6f6f6;
color:#007bff
}
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