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Javascript Help

<body> <div class="container" style="text-align: center; font-family: Raleway; height: 220px:"> <h1 style="color: white; background-color: red"><i class="fab fa-bitcoin" style="color: white; padding: 45px;" href="bitcoin.com"></i> Bitcoin - decentralized digital currency. </h1> <div id="data"></div> <hr> <hr> </div>

</body> </html>

<script type="text/javascript"> var xmlhttp = new XMLHttpRequest(); var url = "https://api.coindesk.com/v1/bpi/currentprice.json"; xmlhttp.onreadystatechange = function() { if (this.readyState == 4 && this.status == 200) { var json = JSON.parse(this.responseText); parseJson(json); }
}; xmlhttp.open("GET", url, true); xmlhttp.send(); function parseJson(json) { var euroValue = "โ‚ฌ" + json["bpi"]["EUR"]["rate"]; document.getElementById("data").innerHTML = "<br />" + euroValue; } </script>

So this gets the BTC price, how would I make it, so once you click a button, it refreshes it.

1 Answer

Dave StSomeWhere
Dave StSomeWhere
19,870 Points

You just need to add a button to your HTML, wrap your javascript in a function and call the function on the button click event.

Does this PEN show your desired result. Notice the commented out function call at the end, uncomment that line so it started with a value, if desired. Also, the button styling/CSS is just copied stuff for fun.