如何在Angular中单击按钮时将嵌套滚动条向下滚动到嵌套滚动div的底部 [英] How to ScrollDown nested scroll bar to the bottom of the nested scroll div on button click in Angular

问题描述

我的页面中有一个滚动条部分(嵌套)，我想将滚动条发送到其部分的底部并单击按钮，但是我无法对内部滚动条做任何事情.我尝试了几乎所有方法，但它们会移动主窗口滚动条. 帮助我解决这个问题.

I have one scrollbar section(Nested) in my page ,i want to send scrollbar to the bottom of its section a button click but i am unable to do anything with the inner scrollbar. I tried almost every method but they move the main window scroll bar. Help me in solving this.

下面是示例代码(仅供参考)

Below is the sample code(Only for Reference)

<div class="scroll-box" id="scrollDiv">
<button (click)="SomeFunction()"> click here to navigate to bottom </button>
<h1> hello </h1>
<h1> Hi</h1> 
<h1> hello </h1> 
<h1> Hi</h1>
<p id="content"> BOTTOM </p>
</div>

P.S:SomeFunction()方法包含将滚动条发送到页面底部的所有代码. 我尝试过的所有方法

P.S: SomeFunction() method includes all the code to send the scrollbar to the bottom of the page. All methods i tried

//var elmnt = document.getElementById("scrollDiv");
//var EsignHeight = elmnt.scrollHeight;
//var contentHeight = document.getElementById('scrollDiv').clientHeight;
//window.parent.scrollTo(0,100);
//window.parent.scroll({ left: 0, top: 500, behavior: 'smooth' });
//this.content.nativeElement.scrollIntoView({ behavior: 'smooth', block: 'end', inline: 'start' });
//this.scrollObject.target.scrollTop = -100;
//var newEsignHeight=-EsignHeight;
//window.scrollTo(0,document.querySelector("#container").scrollHeight);
//$("elmnt").scrollTop(100);
//   console.log("prining offset");
//var Content=document.getElementById(content);
//var topPos = Content.offsetTop;
//document.getElementById(scrollDiv).scrollTop = topPos;
//document.getElementById('scrollDiv').scrollTop = topPos-100;
//   console.log("offsetTop 1:",elmnt.offsetTop);
//   var tempScrollDiv= document.getElementById('scrollDiv');
//   console.log("offsetTop 1:",tempScrollDiv.offsetTop);
//   //tempScrollDiv.scrollTop=0;
//   //var topPos= elmnt.offsetTop;
//  // tempScrollDiv.scrollTop=topPos-elmnt.offsetTop;
//   console.log("offsetTop 2:",elmnt.offsetTop);
//   //$(tempScrollDiv).animate({scrollTop:$(tempScrollDiv).scrollTop() + ($('content').offset().top-$(tempScrollDiv).offset().top)});

更多信息:单击按钮后，我要发送至该段落的滚动条

More Info: On click of button i want send to scroll bar to the paragraph

此滚动条是嵌套的，这意味着我想在子滚动条中而不是在主窗口滚动条中进行移动

推荐答案

我更新了部分代码，并开始正常工作:

I updated some part of your code and it started working fine:

<div class="scroll-box" id="scrollDiv">
    <button (click)="someFunction(bottomPara)"> click here to navigate to bottom </button>
    <h1> hello </h1>
    <h1> Hi</h1> 
    <h1> hello </h1> 
    <h1> Hi</h1>
    <div #bottomPara>
        <p id="content"> BOTTOM </p>
    </div>
</div>

在您的打字稿文件中添加以下功能:

In your typescript file add following function:

someFunction(bottomPara){
    bottomPara.scrollIntoView();
}

更改您的代码:

1. 在P元素之前添加了div，并将其ID设置为bottomPara.
2. 将该对象传递给按钮元素中的someFunction方法.
3. 调用传递的输入的scrollIntoView方法.

希望这对您有用. 这是插件的链接: https://next.plnkr.co/edit/rM2v06dxN9vDKhrb?preview

Hope this works for you. Here is the plunker link: https://next.plnkr.co/edit/rM2v06dxN9vDKhrb?preview

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