The following editor will bring you an article on how to use ajax technology to realize txt pop-up on the page. The editor thinks it's pretty good, so now I'll share the ajax source code with you and give it as a reference. If you are interested in ajax, follow the editor to have a look.
Use ajax technology to click the button to display the content in the TXT text on the page through a pop-up box
/*事件会在页面加载完成后触发。*/
<script>
window.onload = function（）{
/*获取按钮的id*/
var oBth=document.getElementById（‘btn'）;
/*点击按钮触发的函数*//
oBth.onclick = function(){
/*打开浏览器*/
var xhr = new XMLHttpRequest（）;
/*在地址栏输入地址，这里的1txt代表需要打开的内个txt文件*/
xhr.open（‘get'，‘1.txt'，true）
/*提交*/
xhr.send（）;
/*等服务器返回内容*/
xhr.onreadystatechange = function（）{
if（xhr.readystate==4）{
alert（xhr.responseText）;
}
}
}
}
</script>
<body>
<input type="button" value="按钮" id="btn">
</body>The above is all the content of using ajax to open a text file through a pop-up window. I hope it will be helpful to everyone! !
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