[英]How to use in html body a variable that's been defined in script in the head part
In the following code how can I correctly insert the val testName
defined in the function initialize()
in the field Name
in the body? 在下面的代码中,我如何正确在主体的字段Name
中插入在函数initialize()
中定义的val testName
?
<html>
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.min.js"></script>
<script type="text/javascript">
function intialize()
{
var testName="John";
}
</script>
</head>
<body onload="intialize()">
<input id="Name" type="textbox" value=testName>
</body>
</html>
You can use document ready : 您可以使用准备好的文档:
<html>
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.min.js"></script>
<script type="text/javascript">
$(function(){
$('#Name').val('testName');
});
</script>
</head>
<body>
<input id="Name" type="textbox" value=""/>
</body>
</html>
Used the id, Name, and set the value to 'testName' once the document is ready. 准备好文档后,使用id,Name并将值设置为“ testName”。
Well, if you're using jQuery, you could just include this in the function: 好吧,如果您使用的是jQuery,则可以将其包含在函数中:
$("#Name").val(testval);
You might have to put the script in $(document).ready() though. 不过,您可能必须将脚本放入$(document).ready()中。
Try declaring it outside the function 尝试在函数外声明它
<script type="text/javascript">
var testName;
function intialize()
{
testName="John";
}
</script>
But it will become a global variable. 但是它将成为一个全局变量。
This. 这个。 It's easy, and you don't have to worry about any of this jquery mess. 这很容易,而且您不必担心这种jquery混乱。
<html>
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.min.js"></script>
<script type="text/javascript">
function intialize()
{
var testName="John";
document.getElementById("Name").value = testname;
}
</script>
</head>
<body onload="intialize()">
<input id="Name" type="textbox">
</body>
</html>
You have jQuery available so USE it. 您有可用的jQuery,请使用它。 Don't use an older version than 1.6.1 though.. 不过,请勿使用早于1.6.1的版本。
<html>
<head>
<script type="text/javascript" src="http://code.jquery.com/jquery-1.6.1.min.js"></script>
<script type="text/javascript">
var testName="John";
$(document).ready(function() {
$('#Name').val(testName);
});
</script>
</head>
<body>
<input id="Name" type="text">
</body>
</html>
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