Examples of regular expressions in JavaScript that highlight numbers, Chinese characters, and specified characters

这篇文章主要介绍了JavaScript中正则表达式使数字、中文或指定字符高亮显示,需要的朋友可以参考下

<span id="span_id">span2314的23文本213</span>
var htmlobj = txt.replace(/(\d+)/img, "<span style=&#39;background:red;&#39;>$&</span>");
//var htmlobj = txt.replace(/([+\-]?[0-9]+(\.[0-9]+)?)/g, "<span style=&#39;background:red;&#39;>$1</span>"); // 这个也可以
//var htmlobj = txt.replace(/(\d+)/img, "<span style=&#39;background:yellow;&#39;>$1</span>");//这个也可以
alert("替换spna中的数字："+htmlobj);
$("#span_id").html(htmlobj);

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：

红色：style='background:red;'

蓝色：style='background:blue;'

绿色：style='background:green;'

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