1 // Thanks: https://stackoverflow.com/questions/901115/how-can-i-get-query-string-values-in-javascript
3 function getParameterByName (name: string, url: string) {
4 if (!url) url = window.location.href
5 name = name.replace(/[\[\]]/g, '\\$&')
7 const regex = new RegExp('[?&]' + name + '(=([^&#]*)|&|#|$)')
8 const results = regex.exec(url)
10 if (!results) return null
11 if (!results[2]) return ''
13 return decodeURIComponent(results[2].replace(/\+/g, ' '))
16 function viewportHeight () {
17 return Math.max(document.documentElement.clientHeight, window.innerHeight || 0)