我正在尝试确保图像更大，然后在我的图像查看器中打开它们的查看宽度。但是在720p分辨率和谷歌Chrome浏览器上，原始和视口宽度的宽度都为0 ...
以下是一个示例页面，其中应在BFX视图中打开图片（在较低分辨率的Chrome中试用）：Live Example
记录（扫描的第一张图片是相关图片）
Starting BFX View Version 0.3 Build 61 alpha
bfxcore.js:92 BFX View -> Looking for images in: .postpreview...
bfxcore.js:92 BFX View -> Looking for images in: .content...
bfxcore.js:109 Image: http://media-cache-ec0.pinimg.com/originals/ed/e1/c7/ede1c78fe16fba4afd1606772a5fc1ac.jpg Original Width: 0 Against: 0
bfxcore.js:109 Image: images/smilies/wink.png Original Width: 0 Against: 0
bfxcore.js:109 Image: images/smilies/smile.png Original Width: 0 Against: 0
bfxcore.js:109 Image: images/primus/blue/misc/quote_icon.png Original Width: 0 Against: 0
bfxcore.js:109 Image: images/primus/blue/buttons/viewpost-right.png Original Width: 0 Against: 0
bfxcore.js:109 Image: images/smilies/wink.png Original Width: 0 Against: 0
bfxcore.js:109 Image: images/smilies/smile.png Original Width: 0 Against: 0
bfxcore.js:109 Image: images/primus/blue/misc/quote_icon.png Original Width: 0 Against: 0
bfxcore.js:109 Image: images/primus/blue/buttons/viewpost-right.png Original Width: 0 Against: 0
的JavaScript
$(function(){
/****************************************************
/ BFX View version 0.3 build 56
/ by WASasquatch for BeeskneesFX.com
/***************************************************/
// Global vars
var appname = 'BFX View',
appflag = 'alpha',
appversion = 0.3,
appbuild = 61,
// Selectors
findImagesIn = new Array(
'.postpreview',
'.content',
'.restore',
'.postbody'
), // Master container class/id - all image tags in children elements get selected
// Theater selectors
theater = $('#theater-box'),
theaterimg = theater.find('#theater-img'),
theaterclose = theater.find('#theater-header span');
console.log('Starting '+appname+' Version '+appversion+' Build '+appbuild+' '+appflag);
if ( notMobile === false ) {
console.log(appname+' detected a mobile device. Disabling BFX View for performance. Visit us on a desktop!');
} else {
// Start a BFX View selector
for (i=0; i<findImagesIn.length; i++) {
console.log(appname+' -> Looking for images in: '+findImagesIn[i]+'...');
$(findImagesIn[i]).each(function(){
bfxView('.'+$(this).attr('class'));
});
}
}
function bfxView(id) {
var imgCount = 0;
$(id).each(function(){
$(this).find('img').each(function () {
var img = $(this),
width, height, origWidth = $(this).width();
hiddenImg = img.clone().attr('class','').attr('id','').css('visibility', 'hidden').removeAttr('height').removeAttr('width').appendTo('#loading-images');
height = hiddenImg.height();
width = hiddenImg.width();
hiddenImg.remove();
console.log('Image: '+$(this).attr('src')+' Original Width: '+origWidth+' Against: '+width);
if ( width > origWidth ) {
imgCount++;
$(this).css('cursor', 'pointer');
var parent = $(this).parent();
if ( parent.attr('href') == $(this).attr('src') ) {
parent.attr('target','_self');
parent.removeAttr('href');
}
$(this).click(function () {
var startingPoint = $(document).scrollTop(),
theaterActive = true,
bodyo = $('body').css('overflow');
$('body').css('overflow', 'hidden');
theaterimg.html('<img src="' + $(this).attr('src') + '" alt="Medium View" />');
setTimeout(function(){
theaterimg.find('img').each(function(){
var renderWidth = $(this).width();
if ( renderWidth < width ) {
$(this).css('cursor', 'pointer');
theater.find('#viewfull').attr('href', '/viewer.html?src='+Base64.encode($(this).attr('src'))+'&t='+Base64.encode(window.location.href));
theater.on('click', '#theater-img img', function(){
window.location.href = '/viewer.html?src='+Base64.encode($(this).attr('src'))+'&t='+Base64.encode(window.location.href);
});
} else {
theater.find('#viewfull').remove();
$(this).attr('alt','Full Resolution View');
}
});
},0);
theater.fadeIn(1000, function () {
theaterclose.click(function () {
theater.fadeOut(1000, function() {
theaterActive = false;
});
$('body').css('overflow', bodyo);
});
});
});
}
});
});
console.log(appname+' -> '+imgCount+' images found in '+id);
}
});
我更改了搜索代码，以确保检查所有可能的类。用于开始搜索的旧代码是
for (i=0; i<findImagesIn.length; i++) {
console.log(appname+' -> Looking for images in: '+findImagesIn[i]+'...');
bfxView(findImagesIn[i]);
}
已更新的代码仍然没有使用Chrome进行此修改并在Firefox上损坏。这将告诉我“宽度”和“高度”没有定义，就像没有加载图像一样。
$(this).find('img').each(function () {
$(this).load(function(){
var img = $(this),
width, height, origWidth = $(this).outerWidth();
hiddenImg = img.clone().attr('class','').attr('id','').css('visibility', 'hidden').removeAttr('height').removeAttr('width').appendTo('#loading-images');
height = hiddenImg.height();
width = hiddenImg.width();
hiddenImg.remove();
});
答案 0 :(得分：3)
您的示例不起作用：
BFX View -> 0 images found in ...
无论如何，您正在尝试在加载图像之前读取宽度。看看这个问题的答案，它实际上涵盖了同一个主题：
Get the real width and height of an image with JavaScript? (in Safari/Chrome)
对于大图像，我建议使用读取图像尺寸的服务器端脚本，这样客户端就不必等待加载所有图像来激活脚本。
答案 1 :(得分：3)
你需要为所有图像添加一个事件监听器，并在加载后获取它们的界限＆gt;＆gt;对于前。
img.onload = function () {
// get width and height of the img refering to it using "this" keyword
}
如果您使用的是JQuery
$(imgSelector).load(function(){
// get width and height of the img refering to it using "$(this)"
}):