输入框字节输入限制

/* 输入限制100字节 */
descInput(attr) {
    let keyCode = event.keyCode;
    let texVal = attr ? attr: ‘‘;
    let texLength = texVal.replace(/[^\x00-\xff]/g, "012").length; // 一个字符转化为两个字节
    console.log(‘texLength:‘, texLength);
    if (texLength <= 100) {
        event.returnValue = true;
    } else {
        event.returnValue = false;
        this.$Modal.error({
            title: 提示,
            content: ‘备注内容限制为100节‘
        });
    }
    return texLength;
}