如何通过使用insertAdjacentHTML方法在文章内显示javascript广告单元

Question

I am trying to call a google ad sense code inside an article, But i don't want to past ad sense code in middle of an article. For that i am trying some thing like bellow, but it is not working as i expected because of java script issues.

 <script> var x = document.getElementById("myArticle").querySelectorAll("p"); x[1].insertAdjacentHTML('beforeBegin', '<script>document.write(2+1)</script>' ); </script> 

 <div id="myArticle"> <p>A heading with class="example" in div</p> <p>A paragraph with class="example" in div.</p> <p>A paragraph with class="example" in div.</p> </div> 

Answer 1

The problem is that the </script> inside your string terminates the script.

You can use something like "</sc" + "ript>" or "<\\/script>" to prevent this.

 var x = document.getElementById("myArticle").querySelectorAll("p"); x[1].insertAdjacentHTML('beforeBegin', '<script>document.write(2+1)<\\/script>' ); 

 <div id="myArticle"> <p>A heading with class="example" in div</p> <p>A paragraph with class="example" in div.</p> <p>A paragraph with class="example" in div.</p> </div> 

Note that the script in script elements inserted like this won't run automatically. If you want to run some string, you can use eval . Use it carefully.

 eval('document.write(2+1)'); 

 <div id="myArticle"> <p>A heading with class="example" in div</p> <p>A paragraph with class="example" in div.</p> <p>A paragraph with class="example" in div.</p> </div> 

You shouldn't use document.write , though. See the warning in the spec .