如何验证javascript中的单选按钮? [英] how to validate radio buttons in javascript?

问题描述

我的 html 代码-

my html code-

 <form method="post" name="editorform" id="editorform" onsubmit="return validate_editorform(this)" action="#">
      <ol><li>
        <label for="qtitle"><b>Title</b></label>
        <input id="qtitle" name="qtitle" class="text"></textarea>
      </li><li>
        <label for="tag"><b>Tag</b></label>
            <table border="0">
                <tr>
                    <td><input type="radio" name="tag" value="art"/>Art & Living</td>
                    <td><input type="radio" name="tag" value="travel" class="rdbtn"/>Travel</td>
                    <td><input type="radio" name="tag" value="religion" class="rdbtn"/>religion</td>
                </tr>
.....

我的 javascript-

my javascript-

function validate_editorform(editorform) 
{
    var qtitle = editorform.qtitle.value;
    var tag = editorform.tag.value;  
    var question = editorform.question.value;
    var nameRegex = /^[a-zA-Z]+(([\'\,\.\- ][a-zA-Z ])?[a-zA-Z]*)*$/; 

    if(qtitle == "") {
        inlineMsg('qtitle','You must enter a Question title.',5);
        return false;
    }
    if(editorform.tag.checked == "") {
        inlineMsg('tag','You must Tag your question.',5);
        return false;
    }
    if(question == "") {
        inlineMsg('question','You must enter a your Question.',5);
        return false;
    }
}

对于 qtitle 和 question JavaScript 工作正常，但对于单选按钮(标签)则不是.谁能找出问题所在?

推荐答案

if(editorform.tag[0].checked == False... and so on for tag[1]...)

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