Javascript Remove all charater except leading - , one dot and digits

Question

First of all this question is not same as

strip non-numeric characters from string or

Regex to replace everything except numbers and a decimal point

I want to convert a string with valid number like.

--1234// will be -1234
-123-123 will be -123123
12.123.3 will be 12.1233
-123.13.123 will be -123.13123

I tried those

number.replace(/[^0-9.-]/g, '') //it accepts multiple . and -
number.replace(/[^0-9.]-/g, '').replace(/(\..*)\./g, '$1');//it accepts multiple minus

I am facing Problem with leading minus sign.

How I can convert a string which will remove all characters except leading -(remove other minus),digits and only one dot(remove other dots)

Answer 1

Here I am sharing my solution.
Lets assume the string is a;

//this will convert a to positive integer number
b=a.replace(/[^0-9]/g, '');

//this will convert a to integer number(positive and negative)
b=a.replace(/[^0-9-]/g, '').replace(/(?!^)-/g, '');

//this will convert a to positive float number

b=a.replace(/[^0-9.]/g, '').replace(/(..*)./g, '$1');

//this will convert a to float number (positive and negative)

b=a.replace(/[^0-9.-]/g, '').replace(/(..*)./g, '$1').replace(/(?!^)-/g, '');

Update for floating number.(solves copy paste problem)

//For positive float number
b=a.replace(/[^0-9.]/g, '').replace('.', 'x').replace(/\./g,'').replace('x','.');

//For Negative float number
b=a.replace(/[^0-9.-]/g, '').replace('.', 'x').replace(/\./g,'').replace('x','.').replace(/(?!^)-/g, '');

Answer 2

Based on @Shaiful Islam's answer, I added one more code.

var value = number
    .replace(/[^0-9.-]/g, '')       // remove chars except number, hyphen, point. 
    .replace(/(\..*)\./g, '$1')     // remove multiple points.
    .replace(/(?!^)-/g, '')         // remove middle hyphen.
    .replace(/^0+(\d)/gm, '$1');    // remove multiple leading zeros. <-- I added this.

Result

00.434 => 0.434