JavaScript: Check length of URL parameter values

Question

I've this URL here:

http://localhost.com/?color=Red,Blue,Green

How can I check now with JavaScript how many values are set to the parameter separated by the comma?

So something like:

if (url.parameter.length > 1) {
    alert('More then 1 parameters');
} else {
    alert('Just one');
}

Do your values need to be comma seperated. Because there are more convenient ways — Sebastian Speitel
– Sebastian Speitel, Commented Dec 8, 2018 at 0:58
@SebastianSpeitel this is not so important. I can also be a + or /. But my whole implementation is currently based on this format so I need to change a lot of things. — Mr. Jo
– Mr. Jo, Commented Dec 8, 2018 at 1:00
"http://localhost.com/?color=Red,Blue,Green".split("?")[1].split(",").length — connexo
– connexo, Commented Dec 8, 2018 at 1:20

Sebastian Speitel · Accepted Answer · 2018-12-08 01:04:42Z

1

You can use URLSearchParams to get the value and then just split it by the ,.

const url = 'http://localhost.com/?color=Red,Blue,Green';

const colors = new URL(url).searchParams.get('color').split(',');
console.log(colors);
if (colors.length > 1) {
  alert('More then 1 parameters');
} else {
  alert('Just one');
}

answered Dec 8, 2018 at 1:04

Sebastian Speitel

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1 Comment

Mr. Jo Over a year ago

This don't work in the IE browser. Is there a solution which will work?

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