js 获取光标

document.addEventListener('mousemove', function(event) {
    var x = event.clientX; // 获取光标相对于浏览器窗口的x坐标
    var y = event.clientY; // 获取光标相对于浏览器窗口的y坐标
    console.log('Mouse position: ' + x + ', ' + y);
});

function getCursorPosition(input) {
    var position = 0;
    if (document.selection) { // IE浏览器
        input.focus();
        var range = document.selection.createRange();
        range.moveStart('character', -input.value.length);
        position = range.text.length;
    } else if (input.selectionStart || input.selectionStart == '0') { // 其他现代浏览器
        position = input.selectionStart;
    }
    return position;
}

// 使用示例
var input = document.getElementById('my-input');
input.addEventListener('click', function() {
    var cursorPosition = getCursorPosition(input);
    console.log('Cursor position in text field: ' + cursorPosition);
});