Question

我试图通过将iframe src分配给变量来打开不同的iframe窗口，当页面最初加载时，它应该只显示页面上的两个按钮，当我点击按钮时，iframe应该根据按下的按钮加载，我尝试做这样的事情来创建按钮和创建iframe，但它是不工作

<button id="b1">Button 1</button>
<button id="b2">Button 2</button>
<iframe scrolling="no" src="whatnext">
</iframe>
<script>
var b1 = document.getElementById('b1'), b2 = document.getElementById('b2');
var x = "Hello!";
function showX() {
    var whatnext;
    if b1.onclick==true
        whatnext= "http://community.sitepoint.com/" style="border: 0px none; height: 1555px; margin-left: -116px; margin-top: -25px; width: 930px;"
        elseif b2.onclick=true
        whatnext= "http://community.sitepoint.com/" style="border: 0px none; height: 555px; margin-left: -116px; margin-top: -25px; width: 330px;"
}
</script>
and another piece of trial is
<button id="b1">Button 1</button>
<button id="b2">Button 2</button>
<iframe scrolling="no" src="x" style="border: 0px none; height: 1555px; margin-left: -116px; margin-top: -25px; width: 930px;">
</iframe>
<script>
var b1 = document.getElementById('b1'), b2 = document.getElementById('b2');
var x ;
function showX() {
    src="https:http://stackoverflow.com";
}
b1.onclick = function() {
    x = "http://stackoverflow.com;
    showX();
};
b2.onclick = function() {
    x = "www.sitepoint.com";
    showX();
};
</script>

Answer 1

您只需要在点击时更改iframe的src属性。我将src添加到了按钮中的data属性。以下是http://jsfiddle.net/8wLm42ns/2/示例 HTML

    <button class="loadiframe" id="b1" data-src="http://jquery.com/" data-width="500" data-height="400">Button 1</button>
<button class="loadiframe" id="b2" data-src="http://sitepoint.com" data-width="650" data-height="350">Button 2</button>

<iframe id='frame' frameborder="0" scrolling="no" width="500" height="400">

的jQuery

$('.loadiframe').on('click', function(){
    var src = $(this).data('src'),
        width = $(this).data('width'),
        height = $(this).data('height');
    $('#frame').css({
        width: width,
        height: height
    }).attr('src', src);
});

对于javascript解决方案，请尝试此http://jsfiddle.net/8wLm42ns/3/

HTML

<div class="loadiframe">
    <button id="b1" data-src="http://jquery.com/" data-width="500" data-height="400">Button 1</button>
    <button id="b2" data-src="http://sitepoint.com" data-width="650" data-height="350">Button 2</button>
</div>
<iframe id='frame' frameborder="0" scrolling="no" width="500" height="400">

javaScript - 添加头部

function iframeChange() {
    var buttons = document.querySelector(".loadiframe"),
        iframe = document.getElementById('frame');

    buttons.addEventListener("click", function (e) {
        iframe.src = e.target.dataset.src;
        iframe.width = e.target.dataset.width;
        iframe.height = e.target.dataset.height;
    });
}
window.onload = iframeChange;

Answer 2

试试这个解决方案，点击你在特定iframe上加载网页的按钮，不需要jquery。

JSBIN在这里 http://jsbin.com/gebelatomiya/1/

<!doctype html>
<html>
<head>
<script>
function loadFrame (elm){
    var frame1 = document.getElementById('frame1');
    frame1.src = elm.dataset.src;
}
</script>
</head>
<body>
    <button id="b1" data-src="http://www.w3schools.com" onClick="loadFrame(this)">Button 1</button>
    <button id="b2" data-src="http://www.sony.com" onClick="loadFrame(this)">Button 2</button>
    <iframe id="frame1" scrolling="no"></iframe>
</body>
</html>

根据不同的按钮点击打开不同的iframe

2 个答案: