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| <!DOCTYPE html> | |
| <html lang="en"> | |
| <head> | |
| <meta charset="utf-8"> | |
| <title>getParam()</title> | |
| <meta name="viewport" content="width=device-width, initial-scale=1.0"> | |
| </head> | |
| <body> | |
| <script> | |
| /** | |
| * Get the value of a query string from a URL | |
| * (c) Chris Ferdinandi, MIT License, https://gomakethings.com | |
| * @param {String} param The parameter to get the value of | |
| * @param {String} url The URL to get the value from [optional] | |
| * @return {String} The value | |
| */ | |
| function getParam (param, url = window.location) { | |
| let params = new URL(url).searchParams; | |
| let val = params.getAll(param); | |
| if (val.length > 1) return val; | |
| return val[0]; | |
| } | |
| let url = 'http://example.com?this=chicken&that=sandwich&topping=tomato&topping=spicy+mayo'; | |
| // returns "chicken" | |
| let thisOne = getParam('this', url); | |
| console.log(thisOne); | |
| // returns "sandwich" | |
| let thatOne = getParam('that', url); | |
| console.log(thatOne); | |
| // returns "tomato" | |
| let topping = getParam('topping', url); | |
| console.log(topping); | |
| // returns "spicy mayo" | |
| let anotherOne = getParam('another', url); | |
| console.log(anotherOne); | |
| </script> | |
| </body> | |
| </html> |
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