An example of debugging javascript using firebug

2020-03-30 00:54:59
OfStack

 
<script type="text/javascript"> 
//Console. Log ("hello") for debugging in friefox;
 

//Debugging tips
function showLog(message) { 
console.log(message); 
console.info(message); 
console.warn(message); 
console.error(message); 
console.debug(message); 
} 
function test(name) { 
showLog(name); 
} 
test("hello"); 

</script>

Debug the sample

 
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> 
<html> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8"> 
<title>Insert title here</title> 
<script type="text/javascript"> 

function method() { 
var result = 0; 
for(var i = 0; i < 10; i++) { 
result +=i; 
} 
document.getElementById("id1").innerHTML = result; 
} 


</script> 
</head> 
<body> 
<input type="button" value="click" onclick="method()"/> 
<div id="id1"></div> 
</body> 
</html>