jquery中新增屬性和刪除屬性:
$("#2args").attr("disabled",'disabled');
$("#2args").removeAttr("disabled");
問題背景:
選擇“選項1”是,“兩個引數”這個單選按鈕有效。
選擇“選項2”時,讓“兩個引數”的這個單選按鈕無效。
程式碼:
<!DOCTYPE> <html > <head> <meta charset="utf-8" /> <title>demo</title> <style type="text/css"> .control-group{ margin-bottom: 20px; } .controls{ display: inline-block; vertical-align: top; } form{ border:1px dotted #666; padding: 30px; display: inline-block; } input[disabled], select[disabled], textarea[disabled], input[readonly], select[readonly], textarea[readonly] { cursor: not-allowed; } </style> <body> <form method="post" action="" onsubmit="return false;"> <div class="control-group"> <label for="project_name">名稱:</label> <input name="project_name" maxlength="20" id="project_name" placeholder="專案名稱"></div> <div class="control-group"> <label>型別:</label> <select id="project_type" onchange="typeChange()"> <option value="" disabled="disabled"></option> <option value="" disabled="disabled">------ [ 型別一 ] ------</option> <option value="1">選項1</option> <option value="2">選項2</option> <option value="3">選項3</option> <option value="" disabled="disabled"></option> <option value="" disabled="disabled">------ [ 型別二 ] ------</option> <option value="4">選項4</option> <option value="5">選項5</option> <option value="6">選項6</option> </select> </div> <div class="control-group"> <label>引數:</label> <div class="controls"> <br/> <label class="radio" for="1arg"> <input type="radio" name="nodes" id="1arg" value="1" checked="checked" /> 單個引數 </label> <br/> <label class="radio" for="2args"> <input type="radio" name="nodes" id="2args" value="2" /> 兩個引數 </label> <br/> <label class="radio" for="3args" > <input type="radio" name="nodes" id="3args" value="3" disabled="disabled" /> 三個引數 </label> </div> </div> <div class="control-group"> <button id="create_project" type="submit" onclick="beforecreate()">新建</button> <button >取消</button> </div> </form> <script type="text/javascript" src="js/jquery-2.1.4.min.js"></script> <script type="text/javascript"> function typeChange(){ var typeLists=['1','2','3','4','5','6']; var pj_type=$("#project_type option:selected").val(); if(pj_type==2){ $("#2args").attr("disabled",'disabled'); }else if(pj_type==1){ $("#2args").removeAttr("disabled"); }else if($.inArray(pj_type, app_type_list)>=0){ //後期擴充套件功能 } } </script> </body> </html>