Hammer JS似乎不起作用

Question

I have some issues with Hammer JS,

in the chrome developer tool I have some errors :

• Uncaught ReferenceError: TOUCH_ACTION_COMPUTE is not defined hammer.js:37(anonymous function)

The file seems to be corrupted ? but I downloaded it from hammer js and never opened it...

• Uncaught ReferenceError: ifUndefined is not defined hammer.js:9Hammer hammer.js:9(anonymous function) main.js:663j jQuery.js:2k.fireWith jQuery.js:2n.extend.ready jQuery.js:2I

Don't know what this refers to...

jQuery is loaded in first in my HTML page

My script wich calls hammer actions :

var hammer = new Hammer($('img'));

    hammer.on("tap", function(ev){
        alert(ev);
    });

Hope you'll be able to help me, thanks in advance.

Answer 1

You have probably reference the wrong js file in your webpage. If using the npm package make sure to reference <script src="/node_modules/hammerjs/hammer.js"></script> and NOT <script src="/node_modules/hammerjs/src/hammer.js"></script>