嗨
只需在SetTextbox函数中添加一行，您还应该传递一个称为 this 的额外参数，如

Hi
Just add one line in SetTextbox function you should also pass one extra parameter called this like

SetTextbox(this,ReturnTextbox.Trim(),mydata,MyDiv);

function SetTextbox(_this)
{
   /*your code here.. */
   _this.style.display='none';
}

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谢谢，
Imdadhusen

Please do let me know, if you have any doubt.

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Thanks,
Imdadhusen