[英]Can't show javascript variable in html
這是代碼:
<div id="screen1">You do not have javascript enabled.</div>
<div id="screen2">You do not have javascript enabled.</div>
<script>
document.getElementById("screen1").innerHTML = return window.screen.availHeight;
document.getElementById("screen2").innerHTML = return window.screen.availWidth;
</script>
screen1
和screen2
的輸出均為You do not have javascript enabled.
,我認為這種方式行之有效,因為我之前使用過它,並且行之有效:
<div id="locale">You do not have javascript enabled.</div>
<script>document.getElementById("locale").innerHTML = getLang();</script>
如果刪除return
關鍵字,一切將正常進行。 由於您未定義函數/不在函數內部,因此return
關鍵字不合適。
document.getElementById("screen1").innerHTML = window.screen.availHeight; document.getElementById("screen2").innerHTML = window.screen.availWidth;
<div id="screen1">You do not have javascript enabled.</div> <div id="screen2">You do not have javascript enabled.</div>
document.getElementById("screen1").innerHTML = window.screen.availHeight; document.getElementById("screen2").innerHTML = window.screen.availWidth;
<!DOCTYPE html> <html> <head> <title>My HTML</title> <meta charset="UTF-8"> </head> <body> <div id="screen1">You do not have javascript enabled.</div> <div id="screen2">You do not have javascript enabled.</div> </body> </html>
試試這個沒有return
document.getElementById("screen1").innerHTML = window.screen.availHeight;
document.getElementById("screen2").innerHTML = window.screen.availWidth;
我的電腦的輸出
<div id="screen1">860</div>
<div id="screen2">1440</div>
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