关闭当前iframe

<!-- 父页面 -->
<iframe id="myIframe" src="child.html"></iframe>

<script>
function closeIframe() {
    document.getElementById('myIframe').style.display = 'none';
}
</script>

<!-- child.html -->
<button onclick="window.parent.closeIframe()">关闭iframe</button>

<!-- 父页面 -->
<iframe id="myIframe" src="child.html?show=true"></iframe>

<script>
function checkIframeVisibility() {
    const urlParams = new URLSearchParams(window.location.search);
    const show = urlParams.get('show');
    document.getElementById('myIframe').style.display = show === 'true' ? 'block' : 'none';
}
</script>

<!-- child.html -->
<script>
window.onload = function() {
    const urlParams = new URLSearchParams(window.location.search);
    const show = urlParams.get('show');
    if (show !== 'true') {
        window.parent.document.getElementById('myIframe').style.display = 'none';
    }
};
</script>

<!-- 父页面 -->
<iframe id="myIframe" src="child.html"></iframe>

<style>
#myIframe.hidden {
    display: none;
}
</style>

<script>
function hideIframe() {
    document.getElementById('myIframe').classList.add('hidden');
}
</script>

<!-- 父页面 -->
<iframe id="myIframe" src="child.html?show=<?php echo $showIframe ? 'true' : 'false'; ?>"></iframe>

<?php
$showIframe = false; // 根据需要设置这个值
?>