你好，我还是编程新手，请耐心等待。我目前正在尝试制作一个程序，将（x1，y1）（x2，y2）形式的坐标作为字符串放入数组，并将字符串转换为数字，然后将所有转换后的字符串放入另一个数组。我可以对负数进行排序和换算，也可以对正数进行换算。但是我无法从数组中获取“（”和“）”吗？我试图检查未定义或NaN值，但总是将其添加到最终数组中？
<!DOCTYPE html>
<html>
<head>
<title>Graphing Tool</title>
</head>
<body>
<p>Input your set of cordinates,no space inbetween,and select form (Example: (X1,Y1)(X2,Y2) ) </p>
<input id="inital-form" type="text" name="inital-form">
<br>
<br>
<input id="Slope-intercept-form" type="button" name="intialForm" value="Slope Intercept Form" onclick="retriveInput()">
<script type="text/javascript" src="./script.js"></script>
</body>
</html>
let convertedCords = [];
//recieving users cords
function retriveInput() {
let input = document.getElementById("inital-form").value;
console.log(input);
convertCords(input);
}
//converting string of cords into numbers
function convertCords(cordsString) {
let stringArray = cordsString.split("");
for (let i = 0; i < stringArray.length; i++) {
if (stringArray[i] == "-") {
let negativeNum = parseInt(-stringArray[i + 1]);
//removes the "-" and also removes the number I converted to a negative
stringArray.splice(i,2);
convertedCords.push(negativeNum);
console.log(convertedCords);
} else if (stringArray[i] != NaN || stringArray[i] != undefind || stringArray[i] == "(" || stringArray[i] == ")") {
let notNegativeNum = parseInt(stringArray[i]);
convertedCords.push(notNegativeNum);
console.log(convertedCords);
}
}
}