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Preventing HTML and Script injections in Javascript

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Assume I have a page with an input box. The user types something into the input box and hits a button. The button triggers a function that picks up the value typed into the text box and outputs it onto the page beneath the text box for whatever reason. Now this has been disturbingly difficult to find a definitive answer on or I wouldn't be asking but how would you go about outputting this string: <script>alert("hello")</script> <h1> Hello World </h1> So that neither the script is executed nor the HTML element is displayed? What I'm really asking here is if there is a standard method of

Selenium: How to Inject/execute a Javascript in to a Page before loading/executing any other scripts of the page?

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问题 I'm using selenium python webdriver in order to browse some pages. I want to inject a javascript code in to a pages before any other Javascript codes get loaded and executed. On the other hand, I need my JS code to be executed as the first JS code of that page. Is there a way to do that by Selenium? I googled it for a couple of hours, but I couldn't find any proper answer! 回答1: If you cannot modify the page content, you may use a proxy, or use a content script in an extension installed in

Preventing HTML and Script injections in Javascript

阅读更多关于 Preventing HTML and Script injections in Javascript

问题 Assume I have a page with an input box. The user types something into the input box and hits a button. The button triggers a function that picks up the value typed into the text box and outputs it onto the page beneath the text box for whatever reason. Now this has been disturbingly difficult to find a definitive answer on or I wouldn't be asking but how would you go about outputting this string: <script>alert("hello")</script> <h1> Hello World </h1> So that neither the script is executed nor

How to dynamically insert a <script> tag via jQuery after page load?

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I'm having problems getting this to work. I first tried setting my script tags as strings and then using jquery replaceWith() to add them to the document after page load: var a = '<script type="text/javascript">some script here</script>'; $('#someelement').replaceWith(a); But I got string literal errors on that var. I then tried encoding the string like: var a = '&left;script type="text/javascript">some script here<\/script>'; but sending that to replaceWith() outputs just that string to the browser. Can someone please let me know how you would go about dynamically adding a <script> tag into