The button does not contain type = button, which will be submitted when the button is clicked.

A strange thing is: after clicking the button in a pop-up window, I did not expect the pop-up window to disappear. After debugging by the company's js experts, I found the mysteries.
Copy codeThe Code is as follows:
<Button class = "btn btn_set_wj" onclick = "add_q ()"> Add a questionnaire </button>

Just add a type = "button:
Copy codeThe Code is as follows:
<Button class = "btn btn_set_wj" type = "button" onclick = "add_q ()"> Add a questionnaire </button>

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