js去掉数字千分位

let numStr = "1,234,567.89";
let cleanedNumStr = numStr.replace(/,/g, '');
console.log(cleanedNumStr); // 输出: "1234567.89"

let num = 1234567.89;
let formattedNumStr = num.toLocaleString();
let cleanedNumStr = formattedNumStr.replace(/,/g, '');
console.log(cleanedNumStr); // 输出: "1234567.89"

let numStr = "1,234,567.89";
let cleanedNum = Number(numStr.replace(/,/g, ''));
console.log(cleanedNum); // 输出: 1234567.89

let numStr = "1,234,567.89";
let cleanedNumStr = numStr.split(',').join('');
console.log(cleanedNumStr); // 输出: "1234567.89"

function removeThousandSeparator(str) {
    if (!/^\d{1,3}(,\d{3})*(\.\d+)?$/.test(str)) {
        throw new Error("Invalid number format");
    }
    return str.replace(/,/g, '');
}

try {
    let cleaned = removeThousandSeparator("1,234,567.89");
    console.log(cleaned); // "1234567.89"
} catch (error) {
    console.error(error.message);
}

function removeThousandSeparatorSafe(str) {
    if (str === null || str === "") return "";
    return str.replace(/,/g, '');
}

console.log(removeThousandSeparatorSafe("1,234,567.89")); // "1234567.89"
console.log(removeThousandSeparatorSafe("")); // ""
console.log(removeThousandSeparatorSafe(null)); // ""