Jquery obtains the value of text, areatext, radio, checkbox, select, and other operations.

Jquery obtains the values of text, areatext, radio, checkbox, select, and other operations;
1. Suppose we have the following page:

2. <Input Type="Text" Name="Textname" ID="Text_id" Value="">
4. <! -- Add the rest. The important thing is to have type. Name. ID and so on. Generally, these are all available. -->

2. The following describes how to obtain various values in form;

2. Function Get_form_value(){
4. /* Obtain the value of text. areatext */
6. var textval =$ ( " # text_id " ) . ATTR ( " value " ) ; // or
8. VaR Textval= $("# Text_id").Val();
10. /* Obtain the value of the single-choice button */
12. VaR Valradio= $("Input [@ type = radio] [@ checked]").Val();
14. /* Obtain the value of the check box */
16. VaR Checkboxval= $("# Checkbox_id").ATTR("Value");
18. /* Get the value of the drop-down list */
20. VaR Selectval= $('# Select_id').Val();
22. }

3. Other processing of the form:

2. // Control form elements:
4. // Text box, text area:
6. $ ( " # text_id " ) . ATTR ( " value " , '' ) ; // clear content
8. $("# Text_id").ATTR("Value",'Test');// Fill in the content
10. // Multiple choice box checkbox:
12. $ ( " # chk_id " ) . ATTR ( " checked " , '' ) ; // unselected value
14. $ ( " # chk_id " ) . ATTR ( " checked " , true ) ; // selected value
16. If($("# Chk_id").ATTR('Checked')=Undefined) // Determine whether selected
18. // Single-choice group Radio:
20. $("Input [@ type = radio]").ATTR("Checked",'10');// Set the single-choice button with value = 10 to the selected item
22. // Select from the drop-down list:
23. $ ( " # Select_id " ) . ATTR ( " Value " , ' Test ' ) ; // Set value = test Project Selected item
25. $("<Option value = 'test'> test </option> <option value = 'test2'> Test2 </option>").Appendto("# Select_id")// Add the option in the drop-down list
27. $("# Select_id").Empty();// Clear the drop-down list