Question

我在Internet Explorer 11中收到错误

“无法获取未定义或空引用的属性'长度” 线

if (window.localStorage.length !== 0)

它在chrome和Firefox上运行良好，不确定是什么导致它

<script>
    function initialize() {
        // test to see if brouser supports storeage api
        var bSupportsLocal = (('localStorage' in window) && window.localStorage !== null );

        if (!bSupportsLocal) {
            document.getElementById('infoform').innerHTML = "<p> Sorry, This browser does not suport local storage. </p>";
            return;
        }

        if (window.localStorage.length !== 0) {
        document.getElementById('firstName').value = window.localStorage.getItem('firstName');
        $.mobile.navigate("#benefits-facts");
        }
    }

    function storeLocalContent(fName) {
        window.localStorage.setItem('firstName', fName);

        }

        function clearLocalContent(strToStore) {
            window.localStorage.clear();

            }

    window.onload = initialize;
    </script>

Answer 1

我认为IE @interface ViewController (){ NSString *phone; } @end -(void)example { [self.varble ^block { phone=@"abc";// a retain cycle? }]; }最初是未定义的。您正在检查C:\Users\Tom\Anaconda>python Python 2.7.6 |Anaconda 1.9.2 (64-bit)| (default, Nov 11 2013, 10:49:15) [MSC v.1500 64 bit (AMD64)] on win32 Type "help", "copyright", "credits" or "license" for more information. >>> import pandas >>>中的window.localStorage，而不是localStorage。所以window设置为true。它正在执行null语句。 Undefined.length导致错误。这是代码

bSupportLocal

如果localStorage有一些值，它会分配给bSupportsLocal，否则会为它分配空字符串。

IE 11无法获取未定义或空引用的属性“长度”

1 个答案: