javascript - for rounding problem

Question

function integer_methods(){
    var aArray=document.getElementById('wang').getElementsByTagName("em");
    for(var i = 0;i < aArray.length; i++) {
        aArray[i].toFixed(0);   //提示出错 TypeError: aArray[i].toFixed is not a function
    }
}

I want to round the contents of all em tags under ID wang

Answer 1

Number(aArray[i])

toFixed 函数是 Number 的方法。而 aArray[i] 的类型是 HTMLElement。