javascript - d3.js v4 timeParse() not working? - Stack Overflow

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I saw a lot of examples doing the same, but the d3.timeParse() function just doesn't work as expected in my code and returns null.

let parseDate = d3.timeParse("%Y-%m-%d");

let now = new Date();

console.log(now)//returns js date object

let parsedNow = parseDate(now);

console.log(parsedNow) //returns null

See this fiddle for running example.

Any Ideas what I'm doing wrong here?

Help would be greatly appreciated.

I saw a lot of examples doing the same, but the d3.timeParse() function just doesn't work as expected in my code and returns null.

let parseDate = d3.timeParse("%Y-%m-%d");

let now = new Date();

console.log(now)//returns js date object

let parsedNow = parseDate(now);

console.log(parsedNow) //returns null

See this fiddle for running example.

Any Ideas what I'm doing wrong here?

Help would be greatly appreciated.

• javascript
• d3.js
• date-parsing

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1 Answer 1

Sorted by: Reset to default 5

You are trying to parse a date object which is incorrect, I think you want to format a date object into "%Y-%m-%d"

so instead of this

let parseDate = d3.timeParse("%Y-%m-%d");//timeParse is incorrect

it should have been

let parseDate = d3.timeFormat("%Y-%m-%d");//timeFormat a date object into %Y-%m-%d

working code here

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