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我想根據內容大小重新調整我的iframe的大小。經過大量的搜索，我發現了一種在url中使用哈希標籤來執行它的方法。 Here is the link to the reference document。我遇到類似TypeError: frameId is undefined的錯誤。我懷疑我的客人或原始頁面將frameId返回爲null。爲什麼會這樣呢？
我在本地主機上測試它。我使用兩個Yii站點進行測試。FrameId是undefined
這是我的框架視圖。
<?php
Yii::app()->clientScript->registerScriptFile(Yii::app()->baseUrl . '/js/frame.js');?>
<script type="text/javascript">
window.onload = function(event) {
window.setInterval(publishHeight, 300);
}
</script>
<div>
<div><?php echo CHtml::button('Book Now', array('submit' => array('controller/action','param1'=>$param1,'param2'=>$param2))); ?></div>
我的主頁是這樣
<?php
Yii::app()->clientScript->registerScriptFile(Yii::app()->baseUrl . '/js/FrameManager.js');?>
<iframe src="http://localhost/mysite/controller/action?param1=7¶m2=20" frameborder="0"scrolling="no" onload="FrameManager.registerFrame(this)"></iframe>
這是我frame.js
function publishHeight() {
if (window.location.hash.length == 0) return;
var frameId = getFrameId();
if (frameId == '') return;
var actualHeight = getBodyHeight();
var currentHeight = getViewPortHeight();
if (Math.abs(actualHeight - currentHeight) > 15) {
var hostUrl = window.location.hash.substring(1);
hostUrl += "#";
hostUrl += 'frameId=' + frameId;
hostUrl += '&';
hostUrl += 'height=' + actualHeight.toString();
window.top.location = hostUrl;
}
}
function getFrameId() {
var qs = parseQueryString(window.location.href);
var frameId = qs["frameId"];
var hashIndex = frameId.indexOf('#');
if (hashIndex > -1) {
frameId = frameId.substring(0, hashIndex);
}
return frameId;
}
function getBodyHeight() {
var height,
scrollHeight,
offsetHeight;
if (document.height) {
height = document.height;
} else if (document.body) {
if (document.body.scrollHeight) {
height = scrollHeight = document.body.scrollHeight;
}
if (document.body.offsetHeight) {
height = offsetHeight = document.body.offsetHeight;
}
if (scrollHeight && offsetHeight) {
height = Math.max(scrollHeight, offsetHeight);
}
}
return height;
}
function getViewPortHeight() {
var height = 0;
if (window.innerHeight) {
height = window.innerHeight - 18;
} else if ((document.documentElement) && (document.documentElement.clientHeight)) {
height = document.documentElement.clientHeight;
} else if ((document.body) && (document.body.clientHeight)) {
height = document.body.clientHeight;
}
return height;
}
function parseQueryString(url) {
url = new String(url);
var queryStringValues = new Object(),
querystring = url.substring((url.indexOf('?') + 1), url.length),
querystringSplit = querystring.split('&');
for (i = 0; i < querystringSplit.length; i++) {
var pair = querystringSplit[i].split('='),
name = pair[0],
value = pair[1];
queryStringValues[name] = value;
}
return queryStringValues;
}
這是我FrameManager.js
var FrameManager = {
currentFrameId : '',
currentFrameHeight : 0,
lastFrameId : '',
lastFrameHeight : 0,
resizeTimerId : null,
init: function() {
if (FrameManager.resizeTimerId == null) {
FrameManager.resizeTimerId = window.setInterval(FrameManager.resizeFrames, 500);
}
},
resizeFrames: function() {
FrameManager.retrieveFrameIdAndHeight();
if ((FrameManager.currentFrameId != FrameManager.lastFrameId) || (FrameManager.currentFrameHeight != FrameManager.lastFrameHeight)) {
var iframe = document.getElementById(FrameManager.currentFrameId.toString());
if (iframe == null) return;
iframe.style.height = FrameManager.currentFrameHeight.toString() + "px";
FrameManager.lastFrameId = FrameManager.currentFrameId;
FrameManager.lastFrameHeight = FrameManager.currentFrameHeight;
window.location.hash = '';
}
},
retrieveFrameIdAndHeight: function() {
if (window.location.hash.length == 0) return;
var hashValue = window.location.hash.substring(1);
if ((hashValue == null) || (hashValue.length == 0)) return;
var pairs = hashValue.split('&');
if ((pairs != null) && (pairs.length > 0)) {
for(var i = 0; i < pairs.length; i++) {
var pair = pairs[i].split('=');
if ((pair != null) && (pair.length > 0)) {
if (pair[0] == 'frameId') {
if ((pair[1] != null) && (pair[1].length > 0)) {
FrameManager.currentFrameId = pair[1];
}
} else if (pair[0] == 'height') {
var height = parseInt(pair[1]);
if (!isNaN(height)) {
FrameManager.currentFrameHeight = height;
FrameManager.currentFrameHeight += 15;
}
}
}
}
}
},
registerFrame: function(frame) {
var currentLocation = location.href;
var hashIndex = currentLocation.indexOf('#');
if (hashIndex > -1) {
currentLocation = currentLocation.substring(0, hashIndex);
}
frame.contentWindow.location = frame.src + '?frameId=' + frame.id + '#' + currentLocation;
}
};
window.setTimeout(FrameManager.init, 300);