有标准的 npm semver 版本比较库,但我在这里有一些简单的逻辑来比较 semver 版本:
const versionA = '14.8.3';
const versionB = '15.1.1';
const versionC = '15.1.2';
const semver = require('semver');
const assert = require('assert');
const isGreater = (a, b) => {
const [majorA, minorA, patchA] = String(a).split('.').map(v => Number.parseInt(v));
const [majorB, minorB, patchB] = String(b).split('.').map(v => Number.parseInt(v));
if (majorA > majorB) {
return true;
}
if (majorB > minorA) {
return false;
}
if (minorA > minorB) {
return true;
}
if (minorB > minorA) {
return false;
}
if (patchA > patchB) {
return true;
}
if (patchB > patchA) {
return false;
}
return false;
};
assert(isGreater(versionB, versionA), 'version b should be greater.');
assert(isGreater(versionA, versionB), 'version b should be greater.');
我的问题是 - 有没有办法简化 GreaterThan 函数中的逻辑?该函数应该复制 semver.gt() 中的逻辑。
您可以使用localeCompare
相反,与numeric
选项(与numeric
,比较是这样的“1”
const versionA = '14.8.3';
const versionB = '15.1.1';
const versionC = '15.1.2';
const versionD = '15.1.10';
const versionE = '15.2.1';
const versionF = '15.11.1';
const isGreater = (a, b) => {
return a.localeCompare(b, undefined, { numeric: true }) === 1;
};
// first argument version comes later than second argument:
console.log(isGreater(versionB, versionA));
console.log(isGreater(versionC, versionB));
console.log(isGreater(versionD, versionC));
console.log(isGreater(versionE, versionD));
console.log(isGreater(versionF, versionE));
console.log('---');
// second comes before first:
console.log(isGreater(versionA, versionB));
// same, return value should be false:
console.log(isGreater(versionA, versionA));
或者,等效地,您可以传递区域设置字符串
en-US-u-kn-true
作为第二个参数而不是{ numeric: true }
.
本文内容由网友自发贡献,版权归原作者所有,本站不承担相应法律责任。如您发现有涉嫌抄袭侵权的内容,请联系:hwhale#tublm.com(使用前将#替换为@)