Question

好吧，我有点问两个问题，但回答任何一个部分都会帮助我。我将直接提出问题并直接跳到我需要帮助的地方。我正在尝试使用Javascript函数来定义iframe的某些元素，以便用户可以决定源，高度和宽度。我现在的代码如下所示。

<script language="javascript">
window.onload = webPage;
	function webPage(){
	var page = prompt("please enter the website","www.google.com");
	var height = prompt("Please enter the height of the frame","800");
	var width = prompt("Please enter the width of the frame","600");
}
</script>

<iframe src=page height=height width=width>
</iframe>

有没有办法可以重新加载iFrame，让它使用用户输入作为当前代码的元素？我需要做些什么才能将变量用于iFrame？感谢任何关注我的问题并期待您的回答的人。

Answer 1

<script language="javascript">
window.onload = webPage;
	function webPage(){
	var page = prompt("please enter the website","www.google.com");
	var height = prompt("Please enter the height of the frame","800");
	var width = prompt("Please enter the width of the frame","600");

//new content here
document.getElementById("theIframe").innerHTML="<iframe src=\""+page+"\" height=\""+height+"\" width=\""+width+"\"></iframe>";
}
</script>

<div id="theIframe"></div>

Answer 2

首先使用空白值和一个唯一的 ID 初始化IFrame，然后附加用户输入。

这是工作JSFiddle Link

动态更改值

<!DOCTYPE html>
<html>
<head>
    <title>Demo</title>
</head>
<body>
<iframe id="icereaper666" src="" height="0" width="0"></iframe>
<script language="javascript">
window.onload = webPage;
function webPage(){
    var page = prompt("please enter the website","http://www.w3schools.com/");
    var height = prompt("Please enter the height of the frame","400");
    var width = prompt("Please enter the width of the frame","400");
    var iframeElement = document.getElementById("icereaper666");
    iframeElement.src = page;
    iframeElement.height = height;
    iframeElement.width = width;
}
</script>
</body>
</html>

注意：您还可以使用 createElement 动态创建IFrame元素。 Check this out

使用创建元素：

<!DOCTYPE html>
<html>
<head>
    <title>Demo</title>
</head>
<body>
<script language="javascript">
    window.onload = webPage;
    function webPage(){
        var page = prompt("please enter the website","http://www.w3schools.com/");
        var height = prompt("Please enter the height of the frame","400");
        var width = prompt("Please enter the width of the frame","400");
        var iframeElement = document.createElement("iframe");
        iframeElement.src = page;
        iframeElement.height = height;
        iframeElement.width = width;
        document.body.appendChild(iframeElement);
    }
</script>
</body>
</html>

使用javascript函数重新加载HTML元素？

2 个答案: