js利用apply()， Math object， js数组，对象完全智能验证

<script type="text/javascript" src="./jquery.js"> </script> <script type="text/javascript" src="./class.js"> </script> <script type="text/javascript" src="./live.js"> </script> <link rel="stylesheet" type="text/css" href="css.css"> <form class="node-form node-exam-form" action="/node/32928/edit" method="post" id="exam-node-form" accept-charset="UTF-8"> <div class="form-item form-type-textfield form-item-title"> <label for="edit-title">Title <span title="此项必填。" class="form-required">*</span></label> <input type="text" class="form-text required" maxlength="255" size="60" value="" name="title" id="edit-title"> </div> <br><br><br><br><br><br><br><br><br><br><br><br> <div id="edit-field-ex-status" class="field-type-list-integer field-name-field-ex-status field-widget-options-buttons form-wrapper"><div class="form-item form-type-radios form-item-field-ex-status-und"> <label for="edit-field-ex-status-und">状态 </label> <div class="form-radios" id="edit-field-ex-status-und"><div class="form-item form-type-radio form-item-field-ex-status-und"> <input type="radio" class="form-radio" checked="checked" value="0" name="field_ex_status[und]" id="edit-field-ex-status-und-0"> <label for="edit-field-ex-status-und-0" class="option">关闭 </label> </div> <div class="form-item form-type-radio form-item-field-ex-status-und"> <input type="radio" class="form-radio" value="1" name="field_ex_status[und]" id="edit-field-ex-status-und-1"> <label for="edit-field-ex-status-und-1" class="option">开放 </label> </div> </div> </div> </div> <br><br><br><br><br><br><br><br><br><br><br><br> <div class="form-item form-type-textfield form-item-field-exam-score-und-0-value"> <label for="edit-field-exam-score-und-0-value">分值 </label> <input type="text" class="form-text" maxlength="10" size="12" value="" name="field_exam_score[und][0][value]" id="edit-field-exam-score-und-0-value"> </div> <br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br><br> <div class="form-item form-type-select form-item-field-ex-type-und"> <label for="edit-field-ex-type-und">类别 </label> <select class="form-select" name="field_ex_type[und]" id="edit-field-ex-type-und"><option value="_none" selected="selected">- 无 -</option><option value="58">模拟联合国</option><option value="124">测试a</option></select> </div> <br><br><br><br><br><br><br><br><br><br><br><br> <input id="edit-submit" name="op" value="保存" class="form-submit" type="submit"> <input id="edit-delete" name="op" value="删除" class="form-submit" type="submit"> </form>