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I typed in the code, and no matter what the username was, it only showed that it was occupied.

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嘉欣嘉欣2286 days ago1737

reply all(2)I'll reply

  • jin

    jin2018-09-28 10:51:24

    The server-side logic is not posted and cannot be seen. responseText==0 The problem here.

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    • 嘉欣

    The if (this.responseText) statement cannot be executed, but the else statement can be executed.

    — 嘉欣 · 2018-09-28 16:40:10
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