设置所选文本在 IE 中可见

Question

1 Programmatically inserting text into a text box
2 Setting the caret to the end.
3 Making the caret visible (i.e. scroll the text box content)
4 Select some of the text from last programmatically,
5 **set the selected text visible.** (i.e. scroll the text box content)

我可以做 1,2,3,4。但是我做不到 5.这个问题只存在于IE9+

有什么办法吗？？

Answer 1

setSelectionRange() 不完全支持 IE。

所以在谷歌搜索了很多之后，我用下面的代码替换了它，它对我有用。

function setSelection(field, start, charsTobeSelected) {
    end = start + charsTobeSelected;
    if (field.createTextRange) {
        var selRange = field.createTextRange();
        selRange.collapse(true);
        selRange.moveStart('character', start);
        selRange.moveEnd('character', end);
        selRange.select();
        field.focus();
    } else if (field.setSelectionRange) {
        field.focus();
        field.setSelectionRange(start, end);
    } else if (typeof field.selectionStart != 'undefined') {
        field.selectionStart = start;
        field.selectionEnd = end;
        field.focus();
    }
}