分享程序员开发的那些事...
更新时间：2023-12-04 23:47:16
!!!请参见下面的评论，也请让您的问题更清楚！ >
您可以使用&＃x3C 代替使用 \x3C >因为某种原因它在转义字符串的其余部分，所以
<！DOCTYPE html>
< html>
< body>
< p>单击按钮以触发一个函数，该函数将在带有id = demo的p元素中输出 Hello World。
< button onclick = myFunction（）>点击我< / button>
< p id = demo>< / p>
< script>
function myFunction（）{
document.getElementById（ demo）。innerHTML ='Python\x20Auto\x20&＃x3Cscript\x20type\x3D\x22text\x2Fjavascript\ x22\x3E\x20alert\x28\x22JavaScript\x20alert\x22\x29\x3B\x20\x3C\x2Fscript\x3E\x20';
}
< / script>
< / body>
< / html>
<!DOCTYPE html>
<html>
<body>
<p>Click the button to trigger a function that will output "Hello World" in a p element with id="demo".</p>
<button onclick="myFunction()">Click me</button>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("demo").innerHTML = "'Python\x20Auto\x20\x3Cscript\x20type\x3D\x22text\x2Fjavascript\x22\x3E\x20alert\x28\x22JavaScript\x20alert\x22\x29\x3B\x20\x3C\x2Fscript\x3E\x20'";
}
</script>
</body>
</html>
Im setting "demo" elements innerHtml to the escaped version of Python Auto alert("JavaScript alert"); . If you run this html and click on the "Click me" button. You can see the result as "Python Auto". The script tag is missing. Why this is happening ? How come the script tag and the content of it is missing ?
!!!Please see the comment below, also, please make your question a bit more clear!!!
Instead of using \x3C you can use < because somehow it is escaping rest of the string,
<!DOCTYPE html>
<html>
<body>
<p>Click the button to trigger a function that will output "Hello World" in a p element with id="demo".</p>
<button onclick="myFunction()">Click me</button>
<p id="demo"></p>
<script>
function myFunction() {
document.getElementById("demo").innerHTML = "'Python\x20Auto\x20<script\x20type\x3D\x22text\x2Fjavascript\x22\x3E\x20alert\x28\x22JavaScript\x20alert\x22\x29\x3B\x20\x3C\x2Fscript\x3E\x20'";
}
</script>
</body>
</html>