如何使50以下的報警打印超過50（如果聲明）？

Question

function randomise(){ 
    var ran_number=Math.floor(Math.random() * 100); 
    return ran_number; 
    return(ran_number); 
} 

我想要一個if語句如下所示。

alert(randomise + "You scored over 50, You win"); 
alert(randomise + "You scored under 50, You lose"); 

我該怎麼做？

Answer 1

試試這個：

var ran_number = Math.floor(Math.random() * 100); 

if(ran_number > 50){ 
    alert(ran_number+" You scored over 50, You win"); 
}else{ 
    alert(ran_number+" You scored under 50, You lose"); 
} 

Answer 2

var value = randomise(); 
if (value > 50) 
    alert(value + " You scored over 50, You win"); 
else 
    alert(value + " You scored under 50, You lose"); 

Answer 3

要繼續Geoffrey's answer - 不聲明一個變量：

function randomise(){ 
    return Math.floor(Math.random() * 100); 
} 

if((i = randomise()) > 50) { 
    alert('You scored '+i+', you win!'); 
} else { 
    alert('You scored '+i+', you lose...'); 
} 

而且我要離開這裏了這個爲孩子們學習的魔法Javascript：

if((i = Math.floor(Math.random() * 100)) > 50) { alert('You scored '+i+', you win!'); } 
else { alert('You scored '+i+', you lose...'); } 

並配有按鈕來告訴你，你做得怎麼樣：

document.getElementById('buttown').onclick = function(){ 
 
    if((i = Math.floor(Math.random() * 100)) > 50) { alert('You scored '+i+', you win!'); } 
 
    else { alert('You scored '+i+', you lose...'); } 
 
};

<button id="buttown">Click here</button>