set the scroll by button in angular 9 code example

Example 1: To set the text of button using Jquery

BY LOVE
  $('#btnid').text('Show');

Example 2: change the value in checkbox by button react

<input type="checkbox" checked={this.state.chkbox} onChange={this.handleChangeChk} />

Example 3: how to not have the scroll bar drawn in scroll view android studii

android:scrollbars="none"