*纯数字
οnkeyup="this.value=this.value.replace(/\D/g,'')"
*长度
οnkeyup="this.value.length == 11"
*两位小数
οnkeyup="this.value=this.value.replace(/^(\-)*(\d+)\.(\d\d).*$/,'$1$2.$3','')"
转载于:https://www.cnblogs.com/zzlcome/p/11179748.html
