There is something wrong with your code:

ng-click="toEdit({{$index}})"

should be written as

ng-click="toEdit($index)"

Why not use the native one and add the id of textarea to abc;

document.getElementById("abc").focus();

If you input in the console, it is best to add a delay. The focus of textarea can only be triggered when the current page is in focus state. After typing, click anywhere on the page immediately to trigger:

setTimeout(function(){document.getElementById("abc").focus();},1000);

The setfocus you encounter does not take effect, it may be because the current page is not in focus.

Put it in your code environment, add textarea with id, the prefix I wrote is suibianla_{whatever}:

$scope.toEdit = function(index){ //你的业务代码 inputContent[index].readable = true; //我猜你是这样写的，在这里后边加一句 document.getElementById("suibianla_" + index).focus(); }