js 去掉后面的0

function removeTrailingZeros(numStr) {
    return numStr.replace(/0+$/, '');
}

// 示例
console.log(removeTrailingZeros("123.4500")); // 输出: "123.45"
console.log(removeTrailingZeros("100"));      // 输出: "1"
console.log(removeTrailingZeros("123.00"));   // 输出: "123"

function removeTrailingZeros(numStr) {
    return Number(numStr).toString();
}

// 示例
console.log(removeTrailingZeros("123.4500")); // 输出: "123.45"
console.log(removeTrailingZeros("100"));      // 输出: "100"
console.log(removeTrailingZeros("123.00"));   // 输出: "123"

function removeTrailingZeros(numStr) {
    if (numStr.includes('.')) {
        return numStr.replace(/0+$/, '').replace(/\.$/, '');
    }
    return numStr;
}

// 示例
console.log(removeTrailingZeros("123.4500")); // 输出: "123.45"
console.log(removeTrailingZeros("100.00"));   // 输出: "100"
console.log(removeTrailingZeros("123.00"));   // 输出: "123"
console.log(removeTrailingZeros("100"));      // 输出: "100"

function removeTrailingZerosSafe(numStr) {
    if (typeof numStr !== 'string' || isNaN(Number(numStr))) {
        return numStr; // 或者根据需求返回其他值
    }
    return numStr.replace(/0+$/, '').replace(/\.$/, '');
}

// 示例
console.log(removeTrailingZerosSafe("123.4500")); // "123.45"
console.log(removeTrailingZerosSafe("-100.00"));  // "-100"
console.log(removeTrailingZerosSafe("abc"));      // "abc"