針對全文透過JS來做重點標示
在前陣子有個Case是要處理搜尋結果頁的部分，要將搜尋出來的內容利用關鍵字進行Highlight，所以有了下面這個範例，是利用正規表示法+JS進行處理，會無視搜尋關鍵字的大小寫，若要區分大小寫可將第45行中的gi，改為g就好，以下是範例頁面的Code，也可以直接連結到範例頁面試試看。
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title>Highlight Text Sample</title>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.12.4/jquery.min.js"></script>
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0/css/bootstrap.min.css" integrity="sha384-Gn5384xqQ1aoWXA+058RXPxPg6fy4IWvTNh0E263XmFcJlSAwiGgFAW/dAiS6JXm" crossorigin="anonymous">
<style>
.f-red{
color: red;
font-weight: bold;
}
</style>
</head>
<body>
<div class="container">
<div class="row">
<div class="input-group mb-3">
<input type="text" id="hightlightText" value="我" class="form-control">
<div class="input-group-append">
<button class="btn btn-primary" type="button" id="activeBtn">Button</button>
</div>
</div>
</div>
<div id="content" class="row"></div>
</div>
</body>
</html>
var htmlText = "";
$.ajax({
url: "highLightText.txt",
async: false,
success: function(response){
htmlText = response;
}
});
$("#content").html(htmlText);
var hightlightText = $("#hightlightText").val();
$.fn.highlight = function(what,spanClass) {
return this.each(function(){
var container = this,
content = container.innerHTML,
pattern = new RegExp('([<.]*)(' + what + ')([<.]*)','gi'),
replaceWith = '$1<span ' + ( spanClass ? 'class="' + spanClass + '"' : '' ) + '">$2</span>$3',
highlighted = content.replace(pattern,replaceWith);
container.innerHTML = highlighted;
});
}
$('#content').highlight(hightlightText,'f-red');
$("#activeBtn").click(function(){
$("#content").html(htmlText);
var hightlightText = $("#hightlightText").val();
$('#content').highlight(hightlightText,'f-red');
});
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