无法在 IE11 和 Edge 中获取未定义或空引用的属性“textContent”

如何解决无法在 IE11 和 Edge 中获取未定义或空引用的属性“textContent”

function MainfillTable(table,srcs) 
{

var cols = 0
for (field in srcs) 
{
    srcs[cols] = field
    cols++
}  

var row
for (row = 0; row < srcs[srcs[0]].length; row++) 
{
    var tr = trtemplate.cloneNode(true)
    
    var data Fields = new Array()
    var elements = tr.getElementsByTagName('*')
    
    for (var i = 0; i < elements.length; i++)
    {
        var element = elements[i]
        if (element.hasAttribute('data'))
        {
            var datafieldName = element.getAttribute('data')

            var datafieldValue = srcs[datafieldName][row].textContent

            if (element.tagName.toLowerCase() == 'div')
                element.innerHTML = datafieldValue
            else if (element.tagName.toLowerCase() == 'input')
                element.value = datafieldValue
        
    }
    
}
}

将问题排在一行 (var datafieldValue = srcs[datafieldName][row].textContent) 为

IE11 - Unable to get property 'textContent' of undefined or null reference
Edge - Cannot read property 'textContent' of undefined

谁能帮忙看看是什么破坏了代码？