platformFront/src/components/knowledgeExtra/AddAssess/util.js

export const numInputInput = (value, len = 5, decimals = 1) => {
  // value:修改的数字  len 总长度   decimals：允许小数点后几位
  //todo 5位整数数加一位小数
  value += "";
  if (value.length == 0) return null;
  let index = value.lastIndexOf(".");
  if (index != -1) {
    let [int, dec] = value.split(".");
    if (dec.length > decimals) {
      dec = dec.slice(0, dec.length - 1);
    }
    if (int.length > len) {
      int = int.slice(0, int.length - 1);
    }
    return parseFloat(int + "." + dec);
  }
  if (value.length > len) {
    value = value.slice(0, value.length - 1);
  }
  return parseFloat(value);
}