应该是最后一句错误,别的都正确
document.all['d_' + questionID].style.display = "block";
---〉
eval("document.all['d_'" + questionID+"].style.display = 'block'");
document.all['d_' + questionID].style.display = "block";
---〉
eval("document.all['d_'" + questionID+"].style.display = 'block'");
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