如何从列表中获取字符串的索引? [英] how to get index of a string from a list?
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问题描述
我有一个类似
的列表
_Value1 =''apple'',''ball'',''cat''.... so on";
如果我知道苹果在上面的列表中,那么如何从列表中获取整个字符串的索引,就像苹果应该具有索引1,球应该具有2等等.
I have a list like
_Value1 = "''apple'',''ball'',''cat''....so on";
If I know that apple exists in above list.How to get index of whole string from the list.Like apple should have the index 1, ball should have 2 and so on.
What is the javascript code for this stuff?
推荐答案
希望这可以帮助您...
Hope this may help you out...
var str = "a,b,c,d,e,f,g";
function getIndexOf(srcString, searchString) {
var str2Array = srcString.split(',');
var array2Index = [];
for(var i = 0; i < str2Array.length; i++) {
array2Index[str2Array[i]] = i;
}
return (typeof array2Index[searchString] != 'undefined' ? array2Index[searchString] : -1);
}
alert(getIndexOf(str,'a'));
alert(getIndexOf(str,'d'));
alert(getIndexOf(str,'g'));
alert(getIndexOf(str,'not found'));
谢谢&问候,
尼拉·索尼尼(Nial Soni)
Thanks & Regards,
Niral Soni
您是说indexOf
吗?
例如
Do you meanindexOf
?
e.g.
var array = ["foo","boo", "goo"];
var booIndex = array.indexOf("boo")
注意IE(至少是IE7)不支持它.
Note IE (at least IE7) doesn''t support it.
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