Cannot set property 'innerHTML' of null
mainfest.json
"content_scripts": [
{
"js": ["js/content_script.js"],
"matches": [
"http://mp.weixin.qq.com/*",
"https://mp.weixin.qq.com/*"
],
"run_at": "document_start"
}
],
解决办法
"content_scripts": [
{
"js": ["js/content_script.js"],
"matches": [
"http://mp.weixin.qq.com/*",
"https://mp.weixin.qq.com/*"
],
"run_at": "document_end"
}
],