获得图像宽度高度 [英] get image width & height

问题描述

我正在建立网站，我想使用jquery获取图像大小，即宽度或高度. 这是我的代码，

I am building website,i want to get image size i.e.width or height using jquery. here is my code,

var photograf=('url(upload/'+ nm +'.jpg)');
var imgwidth=photograf.width();
var imgheight=photograf.height(); 

但是它不起作用.我知道这是错误的，但是我已经做过上面的事情. 请以其他或正确的方式帮助我. 谢谢.

but it's not working.i know it's wrong but i have do above thing. please help me other or correct way. thank you.

推荐答案

您正在将photograf初始化为字符串，其中没有width()或height()函数.您实际上没有尝试使用jQuery或其他方式加载图像.实际上，代码中的任何地方都没有jQuery.

You're initializing photograf as a string, which has no width() or height() functions. Nowhere are you actually attempting to load an image, with jQuery or otherwise. In fact, there is no jQuery anywhere in your code.

您可以将图像添加到页面中，然后找到所得元素的宽度/高度，或创建一个新的Image对象:

You could either add the image to the page, and then find the resulting element's width/height, or create a new Image object:

photograf = new Image();
photograf.src = 'upload/' + nm + '.jpg');
var width = photograf.width;
var height = photograf.height;

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