document.getElementById（id）.focus（）不适用于firefox或chrome [英] document.getElementById(id).focus() is not working for firefox or chrome

问题描述

当我做onchange事件时，它进入该函数的验证，但焦点不在于我正在使用 document.getElementById（'controlid'）。focus（）;

When ever I do onchange event, its going inside that function its validating, But focus is not comming I am using document.getElementById('controlid').focus();

我使用的是Mozilla Firefox和谷歌Chrome，两者都无效。我不想要任何IE浏览器。任何人都可以告诉我我的原因是什么。

I am using Mozilla Firefox and Google Chrome, in both its not working. I don't want any IE. Can any one tell me what could me the reason.

提前致谢

以下是代码：

var mnumber = document.getElementById('mobileno').value; 
if(mnumber.length >=10) {
    alert("Mobile Number Should be in 10 digits only"); 
    document.getElementById('mobileno').value = ""; 
    document.getElementById('mobileno').focus(); 
    return false; 
}

推荐答案

尝试使用计时器：

var mnumber = document.getElementById('mobileno').value;
if (mnumber.length >=10) 
{ 
    alert("Mobile Number Should be in 10 digits only");
    document.getElementById('mobileno').value = "";
    window.setTimeout(function ()
    {
        document.getElementById('mobileno').focus();
    }, 0);
    return false;
}

当线程空闲时，将运行计数为0的计时器。如果这没有帮助，请尝试在onblur事件中使用代码（带有计时器）。

A timer with a count of 0 will run when the thread becomes idle. If that doesn't help, try the code (with the timer) in the onblur event instead.

这篇关于document.getElementById（id）.focus（）不适用于firefox或chrome的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！