银行卡号4位分隔JS

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银行卡号4位分隔JS



this.value = this.value.replace(/[ \f\t\v]/g, '').replace(/(\d{4})(?=\d)/g, "$1 "); //要换行
this.value = this.value.replace(/[\s]/g, '').replace(/(\d{4})(?=\d)/g, "$1 ");//不换行
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