Javascript 成功安装google扩展时发出警报
我有一个链接到谷歌浏览器扩展的网页。如果它已安装,我需要一个警报,指示它已安装。我试着把这个脚本放到页面上,但它不起作用Javascript 成功安装google扩展时发出警报,javascript,google-chrome-extension,Javascript,Google Chrome Extension,我有一个链接到谷歌浏览器扩展的网页。如果它已安装,我需要一个警报,指示它已安装。我试着把这个脚本放到页面上,但它不起作用 <script type="text/javascript"> var first_run = true; if (!localStorage['ran_before']) { first_run = false; localStorage['ran_before'] = '1'; } if (ran_before) alert('i have b
<script type="text/javascript">
var first_run = true;
if (!localStorage['ran_before']) {
first_run = false;
localStorage['ran_before'] = '1';
}
if (ran_before) alert('i have been installed!');
</script>
var first_run=真;
如果(!localStorage['run_在']之前){
第一次运行=错误;
localStorage['run_在']='1'之前;
}
如果(之前运行过)警报(“我已安装!”);
您可以将其精简一些,使其更易于阅读
<script type="text/javascript">
if (localStorage.getItem('installed') !== 'true') {
localStorage.setItem('installed', 'true');
alert('i have been installed!')
}
</script>
if(localStorage.getItem('installed')!='true'){
setItem('installed','true');
警报('我已安装!')
}