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Regular implementation in js implements the effect of separating numbers with spaces every four digits

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Release： 2018-03-30 11:23:49
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这次给大家带来js里的正则实现数字每隔四位用空格分隔效果，js里正则实现数字每隔四位用空格分隔效果的注意事项有哪些，下面就是实战案例，一起来看一下。

数字每隔四位用空格分隔代码实例:
分享一段代码实例，它实现了数字每隔四位就用空格分隔。
这样的效果在填写银行卡的时候十分常见，这也是非常人性化的举措。

代码实例如下:

<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title></title>
<script src="http://libs.baidu.com/jquery/1.9.0/jquery.js"></script>
<script>
$(document).ready(function () {
 $('#ant').on('keyup mouseout input', function () {
  var $this = $(this);
  var v = $this.val();
  /\S{5}/.test(v) && $this.val(v.replace(/\s/g, '').replace(/(.{4})/g, "$1 "));
 });
})
</script>
</head>
<body>
<input type="text" id="ant" />
</body>
</html>
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