如何使用parseInt而不是parseFloat转换代表小数的字符串？

Question

Given a string that represents a number use parseInt to convert string to number. I wrote a working function, but did not account for decimal numbers. Is there a way to convert decimals using parseInt? This is as far as I've gotten trying to account for decimals. The problem with this is NaN being returned. I can't think of a solution to implement that filters NaN from the results. The ultimate goal is to compare the two strings. My solution must use parseInt.

function convertStr(str1, str2) {
let num1 = str1.split('')
let num2 = str2.split('');
num1 = num1.map(str => parseInt(str));
num2 = num2.map(str => parseInt(str));
console.log(num1);
console.log(num2);
}

Any help is greatly appreciated.

Answer 1

I think this is a good step to what you are seeking for :

The question is : What do you want as output when encountering decimal value?

 // Soluce to replace NaN by '.' function convertStrReplace(str1) { let num1 = str1.split('') num1 = num1.map(str => parseInt(str)).map(x => isNaN(x) ? '.' : x); console.log(num1); } // Soluce to ignore NaN function convertStrIgnore(str1) { let num1 = str1.split('') num1 = num1.map(str => parseInt(str)).filter(x => !isNaN(x)); console.log(num1); } convertStrReplace('17,52'); convertStrIgnore('17,52'); 

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Syntax alternative

 function convertStrFilter(str1) { const num1 = [ ...str1, ].map(str => parseInt(str)).filter(x => !isNaN(x)); console.log(num1); } convertStrFilter('17,52'); 

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Explaination about integer and string differences

 // String and integer differences // Put a number into a string const str = '9000'; console.log(typeof str, str); // Put a number into a number const number = 9000; console.log(typeof number, number); // Compare both (compare value and type) console.log('equality ===', str === number); // Compare both (compare value) console.log('equality ==', str == number); const numberFromString = parseInt(str); console.log(typeof numberFromString, numberFromString); // Compare both (compare value and type) console.log('equality ===', number === numberFromString);