Поскольку вы хотите сохранить существующую структуру HTML, вам, вероятно, следует заменить .html() всего .search-content.
Поскольку вы, вероятно, не хотите сохранять выделенные разделы от предыдущего щелчка,Вы можете каждый раз вызывать $(".highlight").removeClass("highlight"); в начале функции.
removeClass принимает имя класса , а не строку селектора, поэтому .removeClass(".highlight"); должно быть .removeClass("highlight");.
Хотя, возможно, было бы лучше использовать .replaceWith для полного удаления новых <span> s - таким образом, у вас останутся только текстовые узлы, прежде чем замена начнется снова.
Поскольку искомая строка может содержать символы со специальным значением в регулярном выражении, лучше всего сначала избегать их перед созданием шаблона.(в противном случае, например, поиск foo. будет соответствовать как fooB, так и foo., поскольку . соответствует любому символу)
const escape = s => s.replace(/[-\/\\^$*+?.()|[\]{}]/g, '\\$&');
$("#searchButton").click(function() {
searchHighlight($("#search").val());
});
function searchHighlight(searchText) {
$(".highlight").replaceWith(function() {
return $(this).text();
});
if (!searchText) {
return;
}
var searchExp = new RegExp(escape(searchText), "ig");
$('.search-content').html(
$('.search-content').html().replace(
searchExp,
function(match) { return "<span class='highlight'>" + match + "</span>"; }
)
);
}
.highlight {
background: yellow;
}
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>
<div class="container">
<form class="form-inline">
<label class="sr-only" for="search">Search</label>
<div class="input-group">
<input id="search" type="text" class="form-control" placeholder="Highlight in text">
<span class="input-group-btn">
<button class="btn btn-secondary" id="searchButton" type="button">Search</button>
</span>
</div>
</form>
<div class="search-content" id="search-content">
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