要加载的函数的多个if语句

Question

我正在尝试制作一个if语句，需要两个参数来加载函数，否则应该没有任何反应。

这里它表示form = false或者question.length == 0.但我不需要这个或者这个。

Jquery：

if (form == false || questions.length == 0 ) { 
    alert("You need to create at least one question to create a "+moduleName); 
} else { 
    //do something 
}

怎么做？

Answer 1

逻辑或是 || 。

逻辑和是＆amp;＆amp; 。

if (form == false && questions.length == 0 ) { 
    alert("You need to create at least one question to create a "+moduleName); 
} else { 
    //do something 
}

Answer 2

if (form == false && questions.length == 0 ) { 
    alert("You need to create at least one question to create a "+moduleName); 
} else { 
    //do something 
}

Tutorial

Answer 3

在Javascript中使用双＆符号（＆amp;＆amp;）作为AND子句：

if (form == false && questions.length == 0 ) { 
   alert("You need to create at least one question to create a "+
} else { 
   //do something 
}

Answer 4

将OR更改为AND -

if (form == false && questions.length == 0 ) { 
    alert("You need to create at least one question to create a "+moduleName); 
} else { 
    //do something 
}