js 使得某些字体高亮

使得某些字体高亮

效果图:

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        
    </style>
</head>
<body>
    <input class="input" />
    <div>处理后的值: <span class="filter"></span></div>

    <script type="text/javascript">
        var $input = document.querySelector('.input');
        var $filter = document.querySelector('.filter');

        $input.oninput = function (e) {
            console.log('value',e.target.value)
            $filter.innerHTML = getHighLightStr(e.target.value);
        }

        /* 使得某些字体高亮 */
        getHighLightStr = function (value) {
            var filterArr = ['左','右','前','后'];
            var reg = new RegExp('['+filterArr.join('')+']','g');
            return (value+'').replace(reg,function(item){
                return '<span style="color:#e22e33;">'+item+'</span>';
            })
        }
    </script>
</body>
</html>
posted @ 2020-09-02 22:28  胡姐姐  阅读(738)  评论(0编辑  收藏  举报