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techmeetup-2017may13-boyang
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| // if (MutationObserver) { | |
| // var observer = new MutationObserver(function(mutations) { | |
| // let scripts = Array.from(document.querySelectorAll('script')); | |
| // console.log(scripts); | |
| // let bjs; | |
| // if (!(bjs = scripts.find(s => s.src.includes('b.js')))) | |
| // return; | |
| // // bjs.addEventListener('loaded', function(e) {bjs.remove();}); | |
| // bjs.remove(); | |
| // manipulate(bjs.src); | |
| // this.disconnect(); | |
| // }); | |
| // observer.observe(document, {childList: true, subtree: true}); | |
| // } | |
| // function manipulate(src) { | |
| // var oReq = new XMLHttpRequest(); | |
| // oReq.onerror = function(e) { console.log('xxx Err', e); }; | |
| // oReq.onload = function() { | |
| // // console.log('xxx Success', this); | |
| // let manipulatedCode = this.responseText.replace('\'b\'', '\'c\''); | |
| // eval(manipulatedCode); | |
| // }; | |
| // oReq.open('get', src, true); | |
| // oReq.send(); | |
| // } | |
| function myfunc() { console.log('a\'s target'); } | |
| Object.defineProperty(window, 'myTarget', { | |
| set: function(newValue) { console.log('rejected!'); }, | |
| get: function() { return myfunc; }, | |
| configurable: false | |
| }); |
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <!-- <script async crossorigin="anonymous" src="//player.h-cdn.com/loader.js?customer=boyang_test"></script> --> | |
| </head> | |
| <body> | |
| <!-- <script async src="a.js"></script> --> | |
| <script src="a.js"></script> | |
| <script src="b.js"></script> | |
| <!-- | |
| <script> | |
| window.myTarget(); | |
| </script> --> | |
| </body> | |
| </html> |
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