首頁猿問返回一個值的函數(shù)

返回一個值的函數(shù)

JavaScript

qq_慕標(biāo)6304929 2020-03-30 16:05:03

請在預(yù)置代碼中編寫Javascript代碼，使預(yù)覽頁面實現(xiàn)如下效果：id為demo的段落內(nèi)容顯示7?*?8?=?56任務(wù)與要求請定義函數(shù)myFunction，傳入兩個參數(shù)a、b，返回a和b的積請調(diào)用函數(shù)myFunction，引用id為demo的段落內(nèi)容顯示“7 * 8 = 56”<!DOCTYPE html><html><body><p id="demo"></p></body></html>

查看完整描述

2 回答

已采納

蓮_蓶濏__

TA貢獻(xiàn)25條經(jīng)驗獲得超3個贊

<!DOCTYPE?html>
<html>
<head>
<meta?charset="utf-8"?/>
<title></title>
</head>
<body>
<p?id="demo"></p>
<script>
function?myFunction(a,?b)?{
document.getElementById('demo').innerHTML?=?a?+?'?*?'?+?b?+?'?=?'?+?a?*?b;
}
myFunction(7,?8);
</script>
</body>
</html>

反對回復(fù) 2020-03-31

qq_慕標(biāo)6304929
那如果要用return返回積，該怎么寫啊

回復(fù) 2020-03-31
蓮_蓶濏__
<p id="demo"></p> <script> function myFunction(a, b) { return a * b; } document.getElementById('demo').innerHTML = myFunction(7, 8); </script>

回復(fù) 2020-03-31
蓮_蓶濏__
<p id="demo"></p><script> function myFunction(a, b){return a * b;} document.getElementById('demo').innerHTML = '7+8=' + myFunction(7, 8);</script>

回復(fù) 2020-03-31

點擊展開后面1條

精慕門7263354

TA貢獻(xiàn)1條經(jīng)驗獲得超0個贊

myFunction=(a,b)={
????document.getElementById("demo").innerHTML?+=?`${a}*$=${a*b}`
}

反對回復(fù) 2020-05-09

慕夢前來

TA貢獻(xiàn)66條經(jīng)驗獲得超7個贊

<script>????
function?myFunction(a,b)?{?
????console.log("數(shù)字是:"+i)???????
????document.getElmentById("demo").innerHTML?=?a?"*"+?b?+?"="?+?(a*b)
?}
?myFunction(7,8)
</script>

反對回復(fù) 2020-03-30