插入对象(jquery)延迟？

Question

我允许用户插入一个对象,一个图像,然后我调用该对象上的一个函数.什么似乎是随机的,有时它工作,有时不工作,我想这与DOM尚未更新有关？

//add a new image
function add_image(img) {

var objCount = count_objects() + 1;
var objId = 'object_'+objCount;

var myNewImg = jQuery('<div/>', {
    id: objId,
    class: 'object_image invisible',
}).appendTo('#objectbox');

//sätt objektnamnet (användaren kan ändra senare)
$('#'+objId).attr('namn', objId)

//sätt låsta proportioner som standard
$('#'+objId).addClass('lockedAspectRatio')

//lägg till bilden i detta element
var imgInner = jQuery('<img/>', {
    id: objId,
    class: 'object_image_inner',
    src: img,
}).appendTo( '#'+objId );



window.objectCounter++;

prepare_editmode();

//reset the flag and the temporary image field now that image adding is complete
$('#imageGhost').val(null);

//fixa rätt storlek på bilden
setTimeout(function(){
    restoreSize(myNewImg,imgInner);
    $(myNewImg).removeClass('invisible');
}, 1500);

}

因为如果我在一秒左右之后用按钮手动触发最后一个功能它总是有效.

function restoreSize(myImg,imgInside) { 

if (imgInside == null) {
    console.log("nothing passed");
    var imgInside = $(myImg).find('img');
}
else {
    console.log("passed alright");
}

//remove fixed dimensions on containing div
$(myImg).css("height", 'auto' );
$(myImg).css("width", 'auto' );

//remove the 100% attribute on the image
$(imgInside).css("width", 'auto' );
$(imgInside).css("height", 'auto' );

//get calculated dimensions of div once img original size determines it
var newWidth = $(myImg).css("width");
var newHeight = $(myImg).css("height");

//...and set them firmly.
$(myImg).css("width", newWidth );
$(myImg).css("height", newHeight );

//restore the height/width 100% property to image in case of new resize
$(imgInside).css("width", '100%' );
$(imgInside).css("height", '100%' );    
}

我尝试超时零和相同的结果 - 有时图像已加载,有时不是因此它随机工作,较大的图像(需要更长的时间加载在浏览器中)它当然失败更频繁.现在我用秒超时来绕过它,但这并不是一个很好的解决方案: - /或许我可以在查找('img')上放一个循环来继续检查图像并且只在找到后继续进行？但有时候这可能会让我陷入无限循环问题？

Answer 1

这对你有用吗？

      function add_image(img) {
        var objCount = count_objects() + 1;
        var objId = 'object_' + objCount;

        var myNewImg = jQuery('<div/>', {
           id: objId,
           class: 'object_image invisible'
        }).appendTo('#objectbox');

        $('#' + objId).attr('namn', objId)

        $('#' + objId).addClass('lockedAspectRatio')

        var imgInner = jQuery('<img/>', {
           id: objId,
           'class': 'object_image_inner',
           src: img
        }).load(function () {
           imgInner.appendTo('#' + objId)
           restoreSize(myNewImg, imgInner);
           $(myNewImg).removeClass('invisible');
        });

        window.objectCounter++;

        prepare_editmode();

        //reset the flag and the temporary image field now that image adding is complete
        $('#imageGhost').val(null);
     }

顺便说一句，你有重复的 idmyNewImg和imgInner