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<!DOCTYPE html>
<html lang='en'><head><meta http-equiv='content-type' content='text/html; charset=UTF-8' /></head><body>
<div class="entry-content">
<div class="entry-title roundTop">
<h1 class="jq-clearfix">.val()</h1>
<div class="entry-meta jq-clearfix">
Categories:
<span class="category"><a href="http://api.jquery.com/category/attributes/" title="View all posts in Attributes">Attributes</a></span> | <span class="category"><a href="http://api.jquery.com/category/forms/" title="View all posts in Forms">Forms</a></span> | <span class="category"><a href="http://api.jquery.com/category/manipulation/" title="View all posts in Manipulation">Manipulation</a> > <a href="http://api.jquery.com/category/manipulation/general-attributes/" title="View all posts in General Attributes">General Attributes</a></span>
</div>
</div>
<div class="toc">
<h4><span>Contents:</span></h4>
<ul class="toc-list">
<li>
<a href="#val1">val() </a><ul><li>.val()
</li></ul>
</li>
<li>
<a href="#val2">val( value ) </a><ul>
<li>.val( value )
</li>
<li>.val( function(index, value) )
</li>
</ul>
</li>
</ul>
</div>
<div id="val1" class="entry method">
<h2 class="jq-clearfix roundTop section-title">
<span class="name">.val()</span> <span class="returns">Returns: <a class="return" href="http://api.jquery.com/Types/#String,%20Number,%20Array">String, Number, Array</a></span>
</h2>
<div class="jq-box roundBottom entry-details">
<p class="desc"><strong>Description: </strong>Get the current value of the first element in the set of matched elements.</p>
<ul class="signatures"><li class="signature" id="val"><h4 class="name">
<span class="versionAdded">version added: <a href="/category/version/1.0/">1.0</a></span>.val()</h4></li></ul>
<div class="longdesc">
<p>The <code>.val()</code> method is primarily used to get the values of form elements such as <code>input</code>, <code>select</code> and <code>textarea</code>. In the case of <code><select multiple="multiple"></code> elements, the <code>.val()</code> method returns an array containing each selected option.</p>
<p>For selects and checkboxes, you can also use the <a href="/selected">:selected</a> and <a href="/checked">:checked</a> selectors to get at values, for example:</p>
<pre>$('select.foo option:selected').val(); // get the value from a dropdown select
$('select.foo').val(); // get the value from a dropdown select even easier
$('input:checkbox:checked').val(); // get the value from a checked checkbox
$('input:radio[name=bar]:checked').val(); // get the value from a set of radio buttons</pre>
<blockquote><p><strong>Note: </strong> At present, using <code>.val()</code> on textarea elements strips carriage return characters from the browser-reported value. When this value is sent to the server via XHR however, carriage returns are preserved (or added by browsers which do not include them in the raw value). A workaround for this issue can be achieved using a valHook as follows:</p></blockquote>
<pre>
$.valHooks.textarea = {
get: function( elem ) {
return elem.value.replace( /\r?\n/g, "\r\n" );
}
};
</pre>
</div>
<h3>Examples:</h3>
<div class="entry-examples" id="entry-examples">
<div id="example-0">
<h4>Example: <span class="desc">Get the single value from a single select and an array of values from a multiple select and display their values.</span>
</h4>
<pre class="prettyprint"><code class="example demo-code"><!DOCTYPE html>
<html>
<head>
<style>
p { color:red; margin:4px; }
b { color:blue; }
</style>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
<p></p>
<select id="single">
<option>Single</option>
<option>Single2</option>
</select>
<select id="multiple" multiple="multiple">
<option selected="selected">Multiple</option>
<option>Multiple2</option>
<option selected="selected">Multiple3</option>
</select>
<script>
function displayVals() {
var singleValues = $("#single").val();
var multipleValues = $("#multiple").val() || [];
$("p").html("<b>Single:</b> " +
singleValues +
" <b>Multiple:</b> " +
multipleValues.join(", "));
}
$("select").change(displayVals);
displayVals();
</script>
</body>
</html></code></pre>
<h4>Demo:</h4>
<div class="demo code-demo"></div>
</div>
<div id="example-1">
<h4>Example: <span class="desc">Find the value of an input box.</span>
</h4>
<pre class="prettyprint"><code class="example demo-code"><!DOCTYPE html>
<html>
<head>
<style>
p { color:blue; margin:8px; }
</style>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
<input type="text" value="some text"/>
<p></p>
<script>
$("input").keyup(function () {
var value = $(this).val();
$("p").text(value);
}).keyup();
</script>
</body>
</html></code></pre>
<h4>Demo:</h4>
<div class="demo code-demo"></div>
</div>
</div>
</div>
</div>
<div id="val2" class="entry method">
<h2 class="jq-clearfix roundTop section-title">
<span class="name">.val( value )</span> <span class="returns">Returns: <a class="return" href="http://api.jquery.com/Types/#jQuery">jQuery</a></span>
</h2>
<div class="jq-box roundBottom entry-details">
<p class="desc"><strong>Description: </strong>Set the value of each element in the set of matched elements.</p>
<ul class="signatures">
<li class="signature" id="val-value">
<h4 class="name">
<span class="versionAdded">version added: <a href="/category/version/1.0/">1.0</a></span>.val( value )</h4>
<p class="arguement"><strong>value</strong>A string of text or an array of strings corresponding to the value of each matched element to set as selected/checked.</p>
</li>
<li class="signature" id="val-functionindex- value">
<h4 class="name">
<span class="versionAdded">version added: <a href="/category/version/1.4/">1.4</a></span>.val( function(index, value) )</h4>
<p class="arguement"><strong>function(index, value)</strong>A function returning the value to set. <code>this</code> is the current element. Receives the index position of the element in the set and the old value as arguments.</p>
</li>
</ul>
<div class="longdesc">
<p>This method is typically used to set the values of form fields. </p>
<p>Passing an array of element values allows matching <code><input type="checkbox"></code>, <code><input type="radio"></code> and <code><option></code>s inside of n <code><select multiple="multiple"></code> to be selected. In the case of <code><input type="radio"></code>s that are part of a radio group and <code><select multiple="multiple"></code> the other elements will be deselected.</p>
<p>The <code>.val()</code> method allows us to set the value by passing in a function. As of jQuery 1.4, the function is passed two arguments, the current element's index and its current value: </p>
<pre>$('input:text.items').val(function( index, value ) {
return value + ' ' + this.className;
});
</pre>
<p>This example appends the string " items" to the text inputs' values.</p>
</div>
<h3>Examples:</h3>
<div class="entry-examples" id="entry-examples-1">
<div id="example-1-0">
<h4>Example: <span class="desc">Set the value of an input box.</span>
</h4>
<pre class="prettyprint"><code class="example demo-code"><!DOCTYPE html>
<html>
<head>
<style>
button { margin:4px; cursor:pointer; }
input { margin:4px; color:blue; }
</style>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
<div>
<button>Feed</button>
<button>the</button>
<button>Input</button>
</div>
<input type="text" value="click a button" />
<script>
$("button").click(function () {
var text = $(this).text();
$("input").val(text);
});
</script>
</body>
</html></code></pre>
<h4>Demo:</h4>
<div class="demo code-demo"></div>
</div>
<div id="example-1-1">
<h4>Example: <span class="desc">Use the function argument to modify the value of an input box.</span>
</h4>
<pre class="prettyprint"><code class="example demo-code"><!DOCTYPE html>
<html>
<head>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
<p>Type something and then click or tab out of the input.</p>
<input type="text" value="type something" />
<script>
$('input').bind('blur', function() {
$(this).val(function( i, val ) {
return val.toUpperCase();
});
});
</script>
</body>
</html></code></pre>
<h4>Demo:</h4>
<div class="demo code-demo"></div>
</div>
<div id="example-1-2">
<h4>Example: <span class="desc">Set a single select, a multiple select, checkboxes and a radio button .</span>
</h4>
<pre class="prettyprint"><code class="example demo-code"><!DOCTYPE html>
<html>
<head>
<style>
body { color:blue; }
</style>
<script src="http://code.jquery.com/jquery-1.7rc2.js"></script>
</head>
<body>
<select id="single">
<option>Single</option>
<option>Single2</option>
</select>
<select id="multiple" multiple="multiple">
<option selected="selected">Multiple</option>
<option>Multiple2</option>
<option selected="selected">Multiple3</option>
</select><br/>
<input type="checkbox" name="checkboxname" value="check1"/> check1
<input type="checkbox" name="checkboxname" value="check2"/> check2
<input type="radio" name="r" value="radio1"/> radio1
<input type="radio" name="r" value="radio2"/> radio2
<script>
$("#single").val("Single2");
$("#multiple").val(["Multiple2", "Multiple3"]);
$("input").val(["check1","check2", "radio1" ]);
</script>
</body>
</html></code></pre>
<h4>Demo:</h4>
<div class="demo code-demo"></div>
</div>
</div>
</div>
</div>
</div>
</body></html>
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