前端
阅读量

input获取焦点位置

获取input当前焦点位置插入值

selectionStart

方法例子

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getPosition = element => {
  let cursorPos = 0;
  if (document.selection) {
    //IE
    var selectRange = document.selection.createRange();
    selectRange.moveStart('character', -element.value.length);
    cursorPos = selectRange.text.length;
  } else if (element.selectionStart || element.selectionStart === '0') {
    cursorPos = element.selectionStart;
  }
  return cursorPos;
};