How can I wait for ` tags in your `` and just use a `load` Event? – StackSlave Apr 20 '20 at 03:08

Question

Thanks to @Ultimater. This seems to work as expected:

const script = document.createElement('script');
script.src = 'data:text/html,id = 0;while(true){ if(++id==1000000) break;} window.test = 1; console.log("test defined.");';
script.onload = () => console.log('onload called.', window.test);
document.body.appendChild(script);

score 2 · Accepted Answer · answered Apr 20 '20 at 03:55

2

Thanks to @Ultimater. This seems to work as expected:

const script = document.createElement('script');
script.src = 'data:text/html,id = 0;while(true){ if(++id==1000000) break;} window.test = 1; console.log("test defined.");';
script.onload = () => console.log('onload called.', window.test);
document.body.appendChild(script);

answered Apr 20 '20 at 03:55

Gabe

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script.onload, so simple, i cannot believe it took me this long to find this answer. Thanks! – Joe Lloyd Apr 28 '22 at 08:59

score 0 · Answer 2 · answered Apr 20 '20 at 04:07

Try this:

const injectScript = () => {
        const script = document.createElement('script');
        script.innerHTML = 'console.log("Function loaded..."); window.postMessage({cmd:"loaded"});';
        script.async = false;
        document.body.appendChild(script);
        }

        setTimeout(injectScript, 3000);

        window.addEventListener('message', function(e){
            if(e.data.cmd === 'loaded'){
                console.log('external library loaded');
            }
        });

2 Answers2