当用户提交该表单后,脚本首先检查是否输入了一个或多个搜索关键字,如果一个也没有输入,则中断脚本处理并显示一条错误消息。
Once the user submits this form, the script first checks whether one or more search keywords were entered, and halts script processing with an error message if it finds none.
当用户提交该表单后,脚本首先检查是否输入了一个或多个搜索关键字,如果一个也没有输入,则中断脚本处理并显示一条错误消息。
Once the user submits this form, the script first checks whether one or more search keywords were entered, and halts script processing with an error message if it finds none.
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