JSFiddle - React, Tailwind, and code Playground

HTML

<input type="text" id="str_search" value=" "/>
<input type="button" id="search_str" value="search" />

JavaScript

var array = ["php", "jquery", "java"];
var src_keyword = "";
$(document).ready(function () {
    $("#search_str").click(function () {
        src_keyword = $("#str_search").val().trim();
      var items =  array.filter(function(o, _){
            return o.indexOf(src_keyword) > -1;
        });
    alert(items);
    });
});