读取 image 真实尺寸

by redky

HTML

<img src="http://ec4.images-amazon.com/images/I/51dOZXhgctL._BO2,204,203,200_PIsitb-sticker-arrow-click,TopRight,35,-76_AA300_SH20_OU28_.jpg" width="150px" alt="">

JavaScript

var image = document.querySelector( 'img' );
var timer;
timer = setInterval( function() {
    if ( image.complete ) {
        console.log( 'width:', image.width, 'height:', image.height );
        console.log( 'natureWidth:', image.naturalWidth, 'natureHeight:', image.naturalHeight );
        clearInterval( timer );
    }
}, 200 );