这里当我检查correctValue等于document.getElementById(' box' + j)时,我遇到了这个错误.nerHTML解释器将第二个看作未定义但是当我更改了document.getElementById (' box' + j).innerHTML with this.innerHTML it work.just我不明白为什么它不能与document.getElementById(' box' + j).innerHTML.for this.innerHTML它引用了我知道的当前元素。我的代码在下面提前谢谢
//if i click on the answer box
for(j=1;j<5;j++){
//here i check every box if checked
document.getElementById('box'+j).onclick=function(){
//check if im playing
if(playing==true){
//if the inner Html of the current box is equal to the correct value
if(document.getElementById('box'+j).innerHTML==correctValue){
//we add 1 to the score
score+=1;
//we edit the scorevalue span with the new value of score
editElement('scoreValue',score);
//we hide the wrong div
hide('wrong');
//show the correect div
show('correct');
//set time out of 1 second and after that we hide the correct div
setTimeout(function(){ hide('correct'); }, 1000);
//generate new question and answer
generateQA();
}else{//if the values are not equal
// hide the correct div
hide('correct');
//show the wrong div
show('wrong');
//set a time out of 1 second and after that i show the wrong div
setTimeout(function(){ hide('wrong'); }, 1000);
}
}
};
}