var intReg = /^[1-9]\d*$/;
$("#geshu").on("input",function(e){
var geshu = $("#geshu").val().trim();
if(!intReg.test(geshu)){
alert("个数必须为整数值!");
}else{
alert("是正整数!");
}
});
标签:正整数,校验,alert,输入框,geshu,intReg,var,input
来源: https://blog.csdn.net/weixin_38323645/article/details/89738099