腾龙公司游戏APP下载链接 【xs10159.com】 -新盛公司游戏APP下载链接 【xs10159.com】 const Delta = Quill.imports.delta;let base = new Delta().insert("000000");const op1 = new Delta().retain(3).insert("1");const op2 = new Delta().retain(3).insert("2");let invert1 = op1.invert(base); // [{retain:3},{delete:1}]base = base.compose(op1); // [{insert:"0001000"}]let invert2 = op2.invert(base); // [{retain: 3},{delete:1}]base = base.compose(op2); // [{insert:"00021000"}]let undoable = new Delta().retain(4).insert("3");base = base.compose(undoable); // [{insert:"000231000"}]invert2 = undoable.transform(invert2, true); // [{retain:3},{delete:1}]undoable = invert2.transform(undoable); // [{retain:3},{insert:"3"}]invert1 = undoable.transform(invert1, true); // [{retain:4},{delete:1}]
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