conversion of text to number using JavaScript

Question

After pulling values from an XML file using JavaScript, I face the challenge of converting a string to an integer in order to perform calculations.

To extract data from the XML file, I use the following snippet:

var pop = JSON.stringify(feature.attributes.Total_Pop.value);

This code serves its purpose. Afterwards, I convert the string to an integer with the following code:

var popint = parseInt(pop);

The conversion is successful. However, when attempting mathematical operations on the integer, it returns NAN.

For my math operation, this is the code snippet I utilize:

var pop6 = Math.ceil(popint / 30);

What could be causing this issue? Any helpful suggestions?

Answer 1

Answer №1

Avoid unnecessary stringification and just assign the value directly like this:

var count = feature.attributes.Total_Count.value;

. Using JSON.stringify will add extra quotation marks to the string.

var count = "456";                    // "456"
var countInt = parseInt(count);         // 456

Comparison with:

var count = JSON.stringify("456");    // ""456""
var countInt = parseInt(count);         // NaN

Answer 2

Avoid unnecessary stringification and just assign the value directly like this:

var count = feature.attributes.Total_Count.value;

. Using JSON.stringify will add extra quotation marks to the string.

var count = "456";                    // "456"
var countInt = parseInt(count);         // 456

Comparison with:

var count = JSON.stringify("456");    // ""456""
var countInt = parseInt(count);         // NaN