无法验证文本区域

本文介绍了无法验证文本区域的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述

我无法验证下面的文本区域，不知道我的代码有什么问题.

I am unable to validate the textarea below, don't know what's wrong with my code.

<div id="chooseForm"> <input type="checkbox" name="ArticlesOrderForm" value="ArticlesOrderForm"> <b>Articles Order Form </b> </div>';

$echo .= ' <script> jQuery(function($) { $(".formGroup").hide(); $("#chooseForm input:checkbox").on("change", function() { if($(this).is(":checked")) { $("#" + $(this).val()).show(); } else { $("#" + $(this).val()).hide(); } }); }); </script>';

$echo .= '<div id="ArticlesOrderForm" class="formGroup"> <legend>Articles Order Form</legend> <b><label for="article_keywords">Keywords/Titles<span class="reqd">*</span> : </label></b> <textarea rows="6" cols="50" id="article_keywords" name="article_keywords" > </textarea> </div>'; <br/><br/> if($_POST['ArticlesOrderForm'] == 'checked') { if(!isset($_POST['article_keywords']) || empty($_POST['article_keywords'])) { $myerror= '<li>'.__('<strong>Keywords/Titles</strong> - missing.','article_keywords').'</li>'; } }

如果有人不输入该文本区域，我应该得到一条消息关键字/标题-丢失". 谁能告诉我我的逻辑有什么问题吗?

I should get a message 'keywords/titles - missing' if someone does not enter into that text area.. Could anyone please tell me whats wrong in my logic?

请在此处找到完整的代码: jsfiddle/DTcqk/3/ 此处: jsfiddle/YYAbm/

Please find the full codes here : jsfiddle/DTcqk/3/ and here: jsfiddle/YYAbm/

推荐答案

默认情况下，您的文本区域不为空:

Your textarea is not empty by default:

<textarea rows="6" cols="50" id="article_keywords" name="article_keywords" > </textarea> you have space here ----^

因此它不会输入您的以下if:

So it won't enter your following if :

if(!isset($_POST['article_keywords']) || empty($_POST['article_keywords'])) {

如果要在验证if中仅捕获带有空格的变量，则应使用trim()，例如:

You should use trim() if you want to catch variables with only spaces in your validation if, like so:

$_POST['article_keywords'] = trim($_POST['article_keywords']); if(!isset($_POST['article_keywords']) || empty($_POST['article_keywords'])) {