编辑器光标问题

Question

        insertText: function (text) {
            this.element.focus();
            if (document.all) {
                document.selection.empty();
                this.range.text = text;
                this.range.collapse(true);
                this.range.select();
            }
            else {
                var sel = window.getSelection(), rng = sel.getRangeAt(0);
                rng.deleteContents();
                var node = document.createTextNode(text)
                rng.insertNode(node);
                sel.collapse(node, text.length);
              /*
                if (this.getType() == 'HTMLDivElement') {
                    this.element.innerHTML = this.element.innerHTML.substr(0, this.start) + text + this.element.innerHTML.substr(this.start);                    //赋值1
                } else {                    this.element.text = this.element.value.substr(0, this.start) + text + this.element.text.substr(this.start);                    //赋值2
                };*/
            }
        },楼主可以好好研究下标准浏览器的range和selection对象
https://developer.mozilla.org/en-US/docs/Web/API/Selection
https://developer.mozilla.org/en-US/docs/Web/API/Range

Answer 1

多谢！！这方面我一直在找教材，但基本找不到。英文的一知半解。