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When I inject document.getElementsByTagName("body")[0].style.background = "red"; in developers console in firefox, background becomes red. But when I do webview.loadUrl("javascript:document.getElementsByTagName(\"body\")[0].style.background = \"red\";"); in android webview, whole content in it gets replaced by the word "red". Why is background color not changing and content is being replaced? Also, how can I change the style properties in webview using javascript?

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  • Have you been able to fix this? I have the same problem... Commented Apr 28, 2015 at 8:40

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I solved this problem by injecting the following instead:

webview.loadUrl("javascript:(function() {document.getElementsByTagName(\"body\")[0].style.background = \"red\";})()");
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