How to get element using javaScript
I want to get value of input element using javaScript. I am new to all this Please he开发者_Python百科lp me.
You can use
var stringVal = document.getElementById('youInputID').value;
Other users have answered the question above already. I would also like to recommend looking at one of the javascript libraries. They make this kind of work much easier. My current favorite is jquery. It is amazingly powerful - every day I find some new feature or trick that makes javascript programming easier.
To solve this in jquery you can use:
The line below will create an alert box for the value of an input tag with the id of email using jquery:
alert($("#email").val());
Here is a complete example:
<html>
<head>
<script type="text/javascript" src="jquery.js"></script>
<script type="text/javascript">
$(document).ready(function(){
alert($("#email").val());
});
</script>
</head>
<body>
<form method="POST" action="go.php" id="login_form">
<input type="text" class="inputtext" title="Email" id="email" name="email" value="your@emailaddress" />
</form>
</body>
</html>
Your Javascript should look similar to this:
var elm = document.getElementById('myElement');
var value = elm.value;
And your HTML:
<input type="text" id="myElement" value="My Value" />
Try this:
<input type="text" id="testid" value="" />
Now you can get the value of above text box like this:
document.getElementById('testid').value;
Other way:
document.form_name_here.element_name.value;
Simply run an alert to check if value comes:
alert(document.getElementById('testid').value);
var txt = document.getElementById('ID-OF-FIELD');
var value = txt.value;
加载中,请稍侯......
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