函数setSelectionRange在Android浏览器中不起作用

Question

I am trying to do something like this in a directive in Angularjs. The problem is this works fine in system but when I check the same in Android phone it is failing to set the caret position. I checked on several blogs and website also, is there a solution for this in android device?

elem.bind("input", function(event) {
       var start = elem[0].selectionStart;
       if(start == 1 && event.currentTarget.value.charAt(start-1)==" "){
       var value = event.currentTarget.value.trim();
       event.currentTarget.value = value;
       elem[0].setSelectionRange(0, 0);
    }
}

And yes if I don't use setSelectionRange it moves the caret to the end.

Answer 1

i had the same problem, i used this advice and it worked for me Why the setSelectionRange can't work on android 2.3 platform browser

try wrapping your "setSelectionRange" with "setTimeout with an interval of 0"

tha't should fix your problem.

for example:

   var start = elem[0].selectionStart;
   if(start == 1 && event.currentTarget.value.charAt(start-1)==" "){
   var value = event.currentTarget.value.trim();
   event.currentTarget.value = value;
   setTimeout(() => elem[0].setSelectionRange(0, 0),0);
}