关于填写银行卡每4位加一个空格的解决方法
1、原生js写法
!function(){
document.getElementById('bankCard').onkeyup=function(event){
varv=this.value;
if(/\S{5}/.test(v)){
this.value=v.replace(/\s/g,'').replace(/(.{4})/g,"$1 ");
}
};
}();
2、jQuery写法
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title></title>
</head>
<body>
<input type="text"id="J_BankCard"/>
<script src="https://static.ydcss.com/libs/jquery/1.11.2/jquery.js"></script>
<script>
!function(){
$('#J_BankCard').on('keyup mouseout input',function(){
var$this=$(this),
v=$this.val();
/\S{5}/.test(v)&&$this.val(v.replace(/\s/g,'').replace(/(.{4})/g,"$1 "));
});
}();
</script>
</body>
</html>
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