空的「的addEventListener」當我點擊檢查元素,我得到了拷貝剪貼板工具提示錯誤:無法讀取財產copycode.js
無法讀取空的特性「的addEventListener」。
下面是我的JS代碼:
createtooltip()
var buddhaquote = document.getElementById('mytext')
buddhaquote.addEventListener('mouseup', function(e){
var selected = getSelectionText() // call getSelectionText() to see what was selected
if (selected.length > 0){ // if selected text length is greater than 0
var copysuccess = copySelectionText() // copy user selected text to clipboard
showtooltip(e)
}
}, false)
如何在'console.log'中打印'budhaquote'變量?或者,也許只是在控制檯中運行'document.getElementById('mytext')'? –