Question

我正在为一个滴答网站制作一个表格，但无法弄清楚如何默认选择一个按钮。

<form>
  <input type="radio" name="gender" value="general"> General<br>
  <input type="radio" name="gender" value="medium"> Medium<br>
  <input type="radio" name="gender" value="high"> High
</form>

我知道这很简单，但我似乎无法弄清楚

Answer 1

只需将checked属性添加到相关输入中即可。

checked属性是布尔属性。

如果存在，则指定在页面加载时应预先选择（选中）元素。

Logger.getLogger("package.class").setLevel(Level.OFF);

Answer 2

使用import pandas as pd df = pd.DataFrame({'name':['John','Dave'], 'field1':['blah','blah'], 'field2':['blah','blah']}, index=[1,2], columns=['name','field1','field2']) print (df) name field1 field2 1 John blah blah 2 Dave blah blah #get today date today = pd.to_datetime('now').date() #pandas version 018.0 and more df = df.rename_axis(today,axis=1) #pandas verion below 0.18.0 #df.columns.name = today print (df) 2016-08-11 name field1 field2 1 John blah blah 2 Dave blah blah #if need remove column name df = df.rename_axis(None,axis=1) print (df) name field1 field2 1 John blah blah 2 Dave blah blah属性。

checked

Answer 3

您可以将checked属性添加到输入标记中。

<div class="alert ui-pnotify-container alert-warning ui-pnotify-shadow" style="min-height: 16px;"><div class="ui-pnotify-closer" style="cursor: pointer; visibility: hidden; display: none;"><span class="glyphicon glyphicon-remove" title="Close"></span></div><div class="ui-pnotify-sticker" style="cursor: pointer; visibility: hidden; display: none;"><span class="glyphicon glyphicon-pause" title="Stick"></span></div><div class="ui-pnotify-icon"><span class="glyphicon glyphicon-question-sign"></span></div><h4 class="ui-pnotify-title">Confirmation Needed</h4><div class="ui-pnotify-text">You are currently logged in from another browser.<br>Are you sure to log-off the other session?</div><div style="margin-top:5px;clear:both;text-align:right;"><button type="button" class="btn btn-default ">Ok</button> <button type="button" class="btn btn-default ">Cancel</button></div>

请参阅w3 schools以获取示例。

Answer 4

在输入中使用“checked”属性进行检查。

<form>
  <input type="radio" name="gender" value="general" checked> General<br>
  <input type="radio" name="gender" value="medium"> Medium<br>
  <input type="radio" name="gender" value="high"> High
</form>

Answer 5

您可以使用 HTML Checked标记的input属性：

<form>
  <input type="radio" name="gender" value="general"> General<br>
  <input type="radio" name="gender" value="medium"> Medium<br>
  <input type="radio" name="gender" value="high" checked> High
</form>

Fiddle

html格式的默认选中按钮

5 个答案: