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js little problem, help me

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Post time: 2020-3-14 14:30:02
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alert shows temparray [0], it should show //2016122909584262.jpg, how to execute eval's code,

var index = document.getElementById ("itemno"). selectedIndex;

var temparray = new Array ();
temparray.push ("// 2016122909584262.jpg");
temparray.push ("// 20161214113441953.jpg");
temparray.push ("");
eval ("alert ('temparray [" + index + "]')");
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Post time: 2020-6-12 00:30:01
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You are just alert, what about eval.
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 Author| Post time: 2020-6-12 22:45:01
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Because index is a variable
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Post time: 2020-6-17 11:00:01
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Change eval("alert('temparray["+index+"]')"); to eval("alert(temparray["+index+"])");
Enough.
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 Author| Post time: 2020-6-17 19:45:01
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Thanks, the problem has been solved,
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