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jquery Operation Input Value Summary

Source: Internet
Author: User
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Gets the selected value
Gets the value of a set of radio selected items
var item = $ (' input[@name =items][@checked] '). Val ();

Gets the text of the Select selected item

var item = $ ("select[@name =items] option[@selected]"). Text ();

The second element of the Select drop-down box is the currently selected value

$ (' #select_id ') [0].selectedindex = 1;

Radio the second element of a radio group is the currently selected value
$ (' input[@name =items] '). Get (1). checked = true;

Get Value:

text box, text area:
$ ("#txt"). attr ("value");

$ ("#txt"). Val ();

Multiple marquee checkbox:
$ ("#checkbox_id"). attr ("value");

Radio Group Radio:

$ ("input[@type =radio][@checked]"). Val ();

Drop-down box select:

$ (' #sel '). Val ();

Control form elements:

text box, text area:
$ ("#txt"). attr ("Value", "");//Clear Contents
$ ("#txt"). attr ("value", ' 11 ');//fill content

Multiple marquee checkbox:
$ ("#chk1"). attr ("Checked", "");//Not ticked
$ ("#chk2"). attr ("Checked", true);//tick
if ($ ("#chk1"). attr (' checked ') ==undefined)//Determine if a tick has been made

Radio Group Radio:
$ ("input[@type =radio]"). attr ("Checked", ' 2 ');//Set value=2 for the currently selected item

Drop-down box select:
$ ("#sel"). attr ("value", '-sel3 ');//Set the VALUE=-SEL3 item as the current selection
$ ("<optionvalue= ' 1 ' >1111</option><optionvalue= ' 2 ' >2222</option>"). AppendTo ("#sel")// option to add a drop-down box
$ ("#sel"). empty ();//Empty drop-down box

=====================

In jquery, use $ ("#id") to get the input element of the page, which is equivalent to document.getElementById ("element") However, it is a jquery object instead of a DOM The element object. Value is a property of the DOM element object. Therefore, use $ ("#id"). Value cannot be taken as a value by the following method:

Value:

val = $ ("#id") [0].value;

$ ("#id") [0].value = "New value";

Assignment value:

$ ("#id") [0].value = "New value";
or $ ("#id"). Val ("new value");

val = $ ("#id"). attr ("value");  

jquery input Text Radio Check Select operation  

[XHTML] view Plaincopy
  2. <! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
  4. <HTML xmlns="http://www.w3.org/1999/xhtml">
  6. <head>
  8. <Meta http-equiv= "content-type" content= "text/html; Charset=utf-8 " />
  10. <title> Untitled document </title>
  12. <mce:script src="jquery-starterkit/lib/jquery-1.3.2.min.js" mce_src= "jquery-starterkit/ Lib/jquery-1.3.2.min.js " type=" Text/javascript "></mce:script>
  14. </head>
  16. <body>
  18. <input type="text" id="dd" name="dd" value="DDS"/>dd
  20. <input name="RR" id= "rr" type= "Radio" value=" />ff"
  22. <input name="RR" id= "rr2" type="Radio" value="4" />55
  24. <input name="ff" type="checkbox" value="AA" />jgdg
  26. <input name="ff" type="checkbox" value="GD" />jgdg
  28. <select name="ss" id="ss" size="1">
  30. <option value= ""></option>
  32. <option value="8">d</option>
  34. <option value="2">g</option>
  36. </Select>
  38. <br/>
  40. <input type="button" id= "button" value="buttons One" />
  42. <input type="button" id="JJ" value="pushbutton two" />
  44. <br/>
  46. <div id="SSD">fgfoohello</div>
  48. </body>
  50. <mce:script language="javascript" type="Text/javascript"><!--
  52. $ (function () {
  54. $ ("#button"). Click (function () {
  60. Get value
  62. Alert ($ (' #dd '). Val ());//type=text
  64. Alert ($ (' input[name=rr][checked] '). Val ());//type=Radio
  66. Alert ($ (' input[name=ff][checked] '). Val ());//type=checkbox
  68. Alert ($ ("select[name=SS] option[selected]"). Val ());//select is equal to alert ($ ("#ss option[selected]"). Val ());
  72. Get text
  74. Alert ($ ("select[name=SS] option[selected]"). text ());//select
  78. Control
  80. /*//Disable #dd Disabled
  82. $ ("#dd"). attr ("Disabled", "disabled");
  84. Enable #dd unblock
  86. $ ("#jj"). Removeattr ("Disabled"); */
  90. $ (' input[name=RR] '). Get (0). checked = true;//The first radio is selected
  92. Alert ($ ("input[type=radio][value=)"). attr ("Checked", ' checked '));//value= 34 of Radio are selected
  96. Alert ($ ("input[type=checkbox][value=gd]"). attr ("Checked", ' checked '));//value= GD's checkbox is selected
  98. $ (' input[name=ff] '). Get (1). checked = true;//The first check is selected
  106. /*//option is selected according to the text of option
  108. count=$ ("#ss"). Find ("option"). Length;
  110. for (Var i=0;i<count;i++)
  112. {
  114. if ($ ("#ss"). Get (0). options[i]. Text = = ' d ')
  116. {
  118. $ ("#ss"). Get (0). Options[i]. selected = true;
  122. Break
  124. }
  126. } */
  130. //$ ("<option  Value= ' 1 ' >1111</ option><option < span class= "attribute" >value= ">22s22 </option> "). AppendTo (" #ss ");//add option  
  132. $ ("#ss option[value=8]"). Remove ("");//Remove <option value=' 8 '>d</ Option>
  136. $ ("#ss"). attr ("Value", ' 2 ');//SELECT option
  138. $ (' #ss ') [0]. SelectedIndex = 1;//Select option
  142. $ ("#ss"). empty ();//Clear All option
  146. /*//replacing text
  148. var $Thirdlink = $ ("#ssd");
  150. var linkText = $thirdLink. Text (). replace (' foo ', ' Bar ');
  152. $thirdLink. Text (LinkText); */
  154. });
  156. });
  158. --></mce:script>
  160. </html>

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Related Keywords:
get hidden input value jquery arithmetic operation return numeric value jquery validate email input jquery create input checkbox jquery get checkbox value get input field value get value input javascript

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