ie8下-indexOf 和 trim()方法bug-优快云博客

本文链接：https://blog.youkuaiyun.com/iteye_4328/article/details/82567036

本文探讨了在IE8浏览器下遇到的兼容性问题，包括object.trim()和indexOf()方法不被支持的情况，并提供了相应的解决方案。对于object.trim()，可以通过jQuery的$.trim()替代；对于indexOf()，则推荐使用jQuery的$.inArray()方法。

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var fileType = $.trim(n.resourcesMapping.extension).toLowerCase();
if($.inArray(fileType,fileTypeList)=='-1'){//其他
	 row.find(".fileType").addClass('other');
}else{
	  row.find(".fileType").addClass(fileType);
}

ie8真是各种吐槽无能

1.不识别object.trim();方法

解决方法：$.trim(object);

2.ie9以下没有indexOf()这个方法

IE<9 doesn't have an .indexOf() function for Array,

解决方案：如果使用jquery的话，可以使用$.inArray()方法

jQuery.inArray()

jQuery.inArray( value, array [, fromIndex ] )Returns: Number

Search for a specified value within an array and return its index (or -1 if not found).

在数组中搜索匹配特殊字符，返回为该字符所在数组中的索引值

jQuery.inArray( value, array [, fromIndex ] )
value
Type: Anything
The value to search for.
array
Type: Array
An array through which to search.
fromIndex
Type: Number
The index of the array at which to begin the search. The default is 0, which will search the whole array.

PS：注意

The $.inArray() method is similar to JavaScript's native .indexOf() method in that it returns -1 when it doesn't find a match. If the first element within the array matches value, $.inArray() returns 0.

 Because JavaScript treats 0 as loosely equal to false (i.e. 0 == false, but 0 !== false), if we're checking for the presence ofvalue within array, we need to check if it's not equal to (or greater than) -1.