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Highlight characters using regular expressions

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Release： 2017-12-30 17:58:02
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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=&#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);
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