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Im a newbie to Javascript and trying to debug a simple js function..I need to get the value of x through the alert statement but it doesn't display correctly..How to concatenate a string and int as in this case..
<html>
<head>
</head>
<body>
<script>
function displaydate()
{
document.getElementById("test").innerHTML='first line changed';
document.getElementById("test1").innerHTML='second line changed';
var x = 5;
alert("Value of x" + String.valueOf(x));
}
</script>
<p id="test">this is the 1st line</p>
<p id="test1">this is the 2nd line</p>
<button type="button" onclick="displaydate()">clickme!</button>
<body>
</html>
New code:
<html>
<head>
</head>
<body>
<script>
function displaydate()
{
document.getElementById("test").innerHTML='first line changed';
document.getElementById("test1").innerHTML='second line changed';
var x = 5;
alert("Value of x=" + x);
var cars=new Array();
cars[0]='car';
cars[1]='Volvo';
alert("Value of arrary 1 var=' + cars[0]);
//alert("Value of arrary 2 var='+cars[1]);
}
</script>
<p id="test">this is the 1st line</p>
<p id="test1">this is the 2nd line</p>
<button type="button" onclick="displaydate()">clickme!</button>
<body>
</html>
329
alert("Value of x" + x);
JavaScript is a dynamic language. The conversion is done automatically for you. When you do something like "var x = string + int"
Update
The reason your alert is failing now is because you start the alert with a double quotation mark and end the string piece of the alert with a single quote.
133
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