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JS prevents users from submitting sample code multiple times_javascript tips

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Release： 2016-05-16 16:54:17
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复制代码 代码如下:





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<script> <br>$(function(){ <br>var flag = true; <br>$("#result").on('click',function(){ <br>if(flag){ <br>flag = false; <br>}else{ <br>return; <br>} <br>$("#show").html('<p>' $("#msg").val() '</p>'); <br><br>}); <br>}) <br></script>



so easy!
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