JavaScript 校验总人数和男女比例的方法

function validatePersonCount(total, maleCount, femaleCount) { if (maleCount === undefined && femaleCount === undefined) { // 只检验总人数 if (total <= 0) { return '总人数必须大于0'; } return true; } else if (maleCount === undefined || femaleCount === undefined) { // 性别要求不完整 return '请同时指定男女人数要求'; } else { // 检验男女人数要求 if (maleCount < 0 || femaleCount < 0) { return '男女人数不能小于0'; } if (total < maleCount + femaleCount) { return '总人数不足'; } return true; } }