feat: [基础模板] 数字相加或相乘保留最长的小数位数

src/utils/calUnitTools.js

@@ -12,10 +12,65 @@ export function addTj(valueArr, unitArr) {
   let total = 0
   for (let i = 0; i < unitArr.length; i++) {
     let thisIndex = unit.indexOf(unitArr[i])
-    total += parseFloat(valueArr[i]) * Math.pow(1000, thisIndex - mixIndex)
+    total = addDecimals(
+      total,
+      multiplyDecimals(
+        parseFloat(valueArr[i]),
+        Math.pow(1000, thisIndex - mixIndex)
+      )
+    )
+    // total += parseFloat(valueArr[i]) * Math.pow(1000, thisIndex - mixIndex)
   }
   return {
     total: total,
     unit: unit[mixIndex]
   }
 }
+
+export function addDecimals(a, b) {
+  const strA = a.toString()
+  const strB = b.toString()
+
+  // 获取小数位数
+  const getDecimals = (str) => (str.split('.')[1] || '').length
+  const maxLen = Math.max(getDecimals(strA), getDecimals(strB))
+
+  // 相加并格式化为字符串
+  const result = (parseFloat(a) + parseFloat(b)).toFixed(maxLen)
+
+  // 去掉末尾的0
+  return result.replace(/(\.\d*?)0+$/, '$1').replace(/\.$/, '')
+}
+
+export function multiplyDecimals(a, b) {
+  const strA = a.toString()
+  const strB = b.toString()
+
+  const decA = (strA.split('.')[1] || '').length
+  const decB = (strB.split('.')[1] || '').length
+  const totalDecimals = decA + decB
+
+  const numA = BigInt(strA.replace('.', ''))
+  const numB = BigInt(strB.replace('.', ''))
+
+  const product = numA * numB
+  const productStr = product.toString()
+
+  const isNegative = productStr.startsWith('-')
+  const absStr = isNegative ? productStr.substring(1) : productStr
+
+  let result = ''
+  if (totalDecimals === 0) {
+    result = absStr
+  } else if (absStr.length <= totalDecimals) {
+    result = '0.' + absStr.padStart(totalDecimals, '0')
+  } else {
+    result =
+      absStr.substring(0, absStr.length - totalDecimals) +
+      '.' +
+      absStr.substring(absStr.length - totalDecimals)
+  }
+
+  result = result.replace(/\.?0+$/, '') || '0'
+  return (isNegative ? '-' : '') + result
+}

src/utils/formPackageCommon.js

@@ -1,11 +1,11 @@
 //判断是否显示其他输入框
-export const isShowOther=(v = [],col)=> {
-    if(col &&!col.otherCode){
-        return false;
-    }
-    // 确保v是数组类型，以避免类型错误
-    const arr = Array.isArray(v) ? v : [v];
-    const otherArr = ["其他","遮光","CA-QC Dilution_"]
-    //和凡哥商量，只要value为负数都显示其他
-    return arr.some(item => otherArr.includes(item));
-}
+export const isShowOther = (v = [], col) => {
+  if (col && !col.otherCode) {
+    return false
+  }
+  // 确保v是数组类型，以避免类型错误
+  const arr = Array.isArray(v) ? v : [v]
+  const otherArr = ['其他', '遮光', 'CA-QC Dilution-']
+  //和凡哥商量，只要value为负数都显示其他
+  return arr.some((item) => otherArr.includes(item))
+}