window.onload如果用addEventListener来添加，该怎么添加？

Question

window.onload=function(){console.log('load2')}document.body.onload=function(){console.log('load1')}document.body.addEventListener('load',function(){console.log('load3')})以上代码，load3总是出不来

Answer 1

target.addEventListener(type,listener,useCapture);
Firefox浏览器支持addEventListener()，IE是attachEvent()；
document.body.addEventListener('onload',function(){
console.log('load3');
},false);
document.body.attachEvent('load',function(){
console.log('load3');
})