这次给大家带来的是用正则表达式让字符高亮显示，把数字改换成正则表达式的中文或者指定的字符，既可以高亮。还可以设置其他的高亮颜色，这篇文章就给大家好好分析一下。
红色：style='background:red;'
蓝色：style='background:blue;'
绿色：style='background:green;'
<span id="span_id">span2314的23文本213</span>
var htmlobj = txt.replace(/(\d+)/img, "<span style='background:red;'>$&</span>");
//var htmlobj = txt.replace(/([+\-]?[0-9]+(\.[0-9]+)?)/g, "<span style='background:red;'>$1</span>"); // 这个也可以
//var htmlobj = txt.replace(/(\d+)/img, "<span style='background:yellow;'>$1</span>");//这个也可以
alert("替换spna中的数字："+htmlobj);
$("#span_id").html(htmlobj);相信看了以上介绍你已经掌握了方法，更多精彩请关注php中文网其它相关文章！
相关阅读：
The above is the detailed content of Highlight characters using regular expressions. For more information, please follow other related articles on the PHP Chinese website!
Summary of java basic knowledge
Commonly used expressions in php
What file is resource?
How to switch settings between Huawei dual systems
How to intercept harassing calls
How to solve the problem that the device manager cannot be opened
What are the SEO diagnostic methods?
The difference between mui and vue
![[Web front-end] Node.js quick start](https://img.php.cn/upload/course/000/000/067/662b5d34ba7c0227.png)
