正则判断输入数字

//input只能输入正整数，直接在input标签写的
	onkeyup="this.value=this.value.replace(/\D/g,'')" onafterpaste="this.value=this.value.replace(/\D/g,'')"
	
//input只能输入数字
	let numm = this.params.readjust_price;
	let myreg = /^([0-9]{1,}[.][0-9]*)$/;
	let myreg2 = /^([0-9]{1,})$/;
	if(!myreg.test(numm) && !myreg2.test(numm)){
		this.params.readjust_price = '';
		this.$layer.msg('请输入数字');
	}