Java Reference
In-Depth Information
<script>
function getBrowserName() {
var lsBrowser = navigator.userAgent;
if (lsBrowser.indexOf("MSIE") >= 0) {
return "MSIE";
} else if (lsBrowser.indexOf("Firefox") >= 0) {
return "Firefox";
} else if (lsBrowser.indexOf("Chrome") >= 0) {
return "Chrome";
} else if (lsBrowser.indexOf("Safari") >= 0) {
return "Safari";
} else if (lsBrowser.indexOf("Opera") >= 0) {
return "Opera";
} else {
return "UNKNOWN";
}
}
function getBrowserVersion() {
var ua = navigator.userAgent;
var browser = getBrowserName();
var findIndex = ua.indexOf(browser) + browser.length + 1;
var browserVersion = parseFloat(
ua.substring(findIndex, findIndex + 3));
return browserVersion;
}
var browserName = getBrowserName();
var browserVersion = getBrowserVersion();
if (browserName == "MSIE") {
if (browserVersion < 9) {
document.write("Your version of IE is too old");
} else {
document.write("Your version of IE is fully supported");
}
} else if (browserName == "Firefox") {
document.write("Firefox is fully supported");
} else if (browserName == "Safari") {
document.write("Safari is fully supported");
} else if (browserName == "Chrome") {
document.write("Chrome is fully supported");
} else if (browserName == "Opera") {
document.write("Opera is fully supported");
} else {
document.write("Sorry this browser version is not supported");
}
</script>
</body>
</html>
Save this file as
ch8_example5.html
.
