比较版本号大小

[nmsn]

function compareVersion(version1, version2) {
  const v1 = version1.split('.');
  const v2 = version2.split('.');
  const length = Math.max(v1.length, v2.length);

  for (let i = 0; i < length; i++) {
    const num1 = parseInt(v1[i] || 0);
    const num2 = parseInt(v2[i] || 0);

    if (num1 > num2) {
      return 1;
    } else if (num1 < num2) {
      return -1;
    }
  }

  return 0;
}

[nmsn]

export const versionStringCompare = (preVersion='', lastVersion='') => {
    var sources = preVersion.split('.');
    var dests = lastVersion.split('.');
    var maxL = Math.max(sources.length, dests.length);
    var result = 0;
    for (let i = 0; i < maxL; i++) {  
        let preValue = sources.length>i ? sources[i]:0;
        let preNum = isNaN(Number(preValue)) ? preValue.charCodeAt() : Number(preValue);
        let lastValue = dests.length>i ? dests[i]:0;
        let lastNum =  isNaN(Number(lastValue)) ? lastValue.charCodeAt() : Number(lastValue);
        if (preNum < lastNum) {
            result = -1;
            break;
        } else if (preNum > lastNum) { 
            result = 1;
            break;
        }
    }
    return result;
}