Could I trigger a search by modifying the Element value?

[Mabbs]

Hi, I have a question, when I modify the value of the element directly, such as modify by query value, it seems that this module can't work. How can I trigger it to work?

My current work

function GetQueryString(name)
{
     var reg = new RegExp("(^|&)"+ name +"=([^&]*)(&|$)");
     var r = window.location.search.substr(1).match(reg);
     if(r!=null)return  unescape(r[2]); return null;
}
var mykeyword = GetQueryString("keyword");
var sbox = document.getElementById('search-input');
if(mykeyword !=null && mykeyword.toString().length>1)
{
sbox.value = mykeyword;
}
var sjs = SimpleJekyllSearch({
  searchInput: sbox,
  resultsContainer: document.getElementById('results-container'),
  json: '/search.json',
  searchResultTemplate: '<li>{date} - <a href="{{ site.url }}{url}">{title}</a></li><br>'
})

[Mabbs]

Not this question, I will create a new issue.