Javascript .indexOf 不适用于 int 数组
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时间：2020-08-24 17:19:11 来源:igfitidea点击:
Javascript .indexOf not working on an int array
提问by gta0004
Code:
代码：
function showlayer(name){
var size = js_array.length
var index = js_array.indexOf(name);
var plusOne = js_array[index+1];
document.write("" + name + "<br />" + js_array + "<br />" + index + "<br />" +
plusOne + "<br />" )
...
}
Output:
输出：
301
300,299,301,290,303,304,302,310,291,306,308,305,307,292,294,295,309
-1
300
All possible values of name are in the array, but for some reason indexOf() never finds them. Whats up?
name 的所有可能值都在数组中，但由于某种原因 indexOf() 从未找到它们。这是怎么回事？
回答by Naftali aka Neal
Try this instead:
试试这个：
...
var index = js_array.indexOf(parseInt(name, 10)); // so that it does not try to compare strings...
...
