Hello my friends, i have one problem to get an value with delphi using webbrowser

i need pick this value inside of an text/javascript
just url: ' and here go the value ' this script This script is inside a url that I'm accessing a twebbrowser I would be able to save this value and move to another part

clip: {
onStart: function () {

},
autoPlay: true,
autoBuffering: true,
accelerated: true,
url: 'A BIG URL GOES HERE WITH SOME VALUES AND I NEED GET THIS just THE URL'
provider: 'lighttpd',
scaling: 'fit'
}

I'm new to delphi not understand much, if someone is spending a full example please because they do not understand anything by incomplete.

Thanks to whoever can help me !