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我的功能無法正常工作(周末)

[英]My function doesn't work ( weekend days)

有人可以幫我這個忙嗎? 在星期五,星期六或星期日填充時,它需要返回一個是,在所有其他情況下,它都需要返回一個。每次以“ JA”結尾時...

碼:

    // Nieuwe Array aanmaken dagen
var d = new Date();
var days = ["Zondag","Maandag","Dinsdag","Woensdag","Donderdag","Vrijdag","Zaterdag"];
d.getDay();

// Prompt welke dag
var dag = prompt('Welke dag is het vandaag?');

//functies

function isHetAlWeekend (days, dag)
{
    if ( dag === days[0] || dag === days[5])
    {
        console.log('JA');
    }
    else
    {   
        console.log('NEE');
    }

}

它工作正常,測試ZondagVrijdagZaterdag ,您將獲得JA ,否則為NEE

  // Nieuwe Array aanmaken dagen var d = new Date(); var days = ["Zondag","Maandag","Dinsdag","Woensdag","Donderdag","Vrijdag","Zaterdag"]; d.getDay(); // Prompt welke dag var dag = prompt('Welke dag is het vandaag?'); //functies function isHetAlWeekend (days, dag) { if ( dag === days[0] || dag === days[5] || dag === days[6]) { alert('JA'); } else { alert('NEE'); } } isHetAlWeekend(days, dag); 

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