Home > Article > Web Front-end > How to determine if the input box cannot be spaces
This time I will bring you a method to determine that the input box cannot be a space. What are the precautions for the method to determine that the input box cannot be a space? The following is a practical case, let's take a look.
The example is as follows:
var sno = $('#sno').val();
var sname = $('#sname').val();
if((sno.indexOf(" ") >= 0 || sno == null) || (sname.indexOf(" ") >= 0 || sname == null)){
alert('学号和名称不能为空格或null值');
return;
}else{
} I believe you have mastered the method after reading the case in this article. For more exciting information, please pay attention to other php Chinese websites related articles! Recommended reading:
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