Get the current value of the first element in the mix of matched elements or set the value of every matched element.

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Description: Get the current value of the first element in the phối of matched elements.

version added: 1.0.val()

The .val() method is primarily used to get the values of form elements such as đầu vào, select and textarea. When called on an empty collection, it returns undefined.

When the first element in the collection is a select-multiple (i.e., a select element with the multiple attribute set), .val() returns an array containing the value of each selected option. As of obatambeienwasirherbal.com 3.0, if no options are selected, it returns an empty array; prior to lớn obatambeienwasirherbal.com 3.0, it returns null.

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For selects, checkboxes và radio buttons, you can use :checked lớn select the right elements. For example:

Note: At present, using .val() on elements strips carriage return characters from the browser-reported value. When this value is sent to lớn the VPS via XHR, however, carriage returns are preserved (or added by browsers which vị not include them in the raw value). A workaround for this issue can be achieved using a valHook as follows:

Get the single value from a single select and an array of values from a multiple select and display their values.

Description: Set the value of each element in the set of matched elements.

version added: 1.0.val( value )version added: 1.4.val( function )

This method is typically used to mix the values of khung fields.

val() allows you to lớn pass an array of element values. This is useful when working on a obatambeienwasirherbal.com object containing elements lượt thích , , & s inside of a . In this case, the inputs and the options having a value that matches one of the elements of the array will be checked or selected while those having a value that doesn't match one of the elements of the array will be unchecked or unselected, depending on the type. In the case of s that are part of a radio group & s, any previously selected element will be deselected.

Setting values using this method (or using the native value property) does not cause the dispatch of the change sự kiện. For this reason, the relevant sự kiện handlers will not be executed. If you want to exexinh đẹp them, you should Gọi .trigger( "change" ) after setting the value.

The .val() method allows setting the value by passing in a function. As of obatambeienwasirherbal.com 1.4, the function is passed two arguments, the current element's index và its current value: