react 输入小数点

Posted 2020-12-10 chengyunshen

    <Input
            style={{ width: 80 }}
            value={percent.commission}
            defaultValue={0}
            onChange={(e) => {
              let { value } = e.target;
              let re = /(^(d|[1-9]d)(.d{0,2})?$)|(^100$)/;
              if(!re.test(value)){
                value = value.substring(0,value.length-1)
              }
              dispatch({
                type: "percent/updatePayload",
                payload: {
                  commission: value,
                },
              });
            }}
          ></Input>

  //格式化数字
  function formatNum(num) {
    if(!num){
      return ‘0.00‘
    }
    if(num.toString().endsWith(".")){
      return num + ‘00‘
    }
    return parseFloat(num).toFixed(2);
  }

• 不是随便输的情况 不要用InputNumber