focus(); Set Focus on an Input Field The following code sets focus on the input field on page load. window.onload = function() { document.getElementById('username-input').focus(); } Set Focus on an Input Field in an HTML Form If the input element is part of a form, instead...
...-- function txtfocus(event){ //当前元素获得焦点 var e=window.event; var obj=e.srcElement; //用于获取当前对象的名称 obj.style.background...="#FFFF66"; } function txtblur(event){ //当前元素失去焦点 var e=window.event; var obj=e.srcElement; obj.style.background...="FFFFFF"; ...
removehandler:function(element,type,handler) { if(element.removeEventListenter) { element.addEventListenter(type,handler,false); } else if (element.detachEvent) { element.detachEvent("on"+type,handler); } else { element["on"+type] = null; } }, getCharCode: function(event) { if(typeof...
varmodal=document.getElementById('modalId');varinput=modal.querySelector('input');input.focus(); 在上面的代码中,modalId是模态窗口的元素ID,input是模态窗口中的输入框元素。focus()方法将焦点设置在输入框上。 最后,确保在模态窗口完全打开后再设置焦点。可以使用setTimeout()函数来延迟设置焦点的时间,...
varcontrol=document.getElementById(<control name>); if( control!=null){ control.focus(); } 这里写了一个SetFocusControl函数来封装上面的JavaScript代码,并且注册到页面上,注册到页面上使用的是Page.RegisterStartupScript 方法 PublicSubSetFocusControl(ByValControlNameAsString) 'character ...
对我来说,Javascriptfocus()如果我将它与按钮和 onClick 事件一起使用,方法工作正常,但是对于onBlur来自文本框,它不起作用。任何人都可以指导我吗? function displayResult() { var inp1=document.getElementById("text1").value;var inp2=inp1.length;if(inp2==0) { alert("Field 1 cannot be left ...
Theonfocusevent is not cancelable. If you want to prevent an element from getting the focus, set thedisabledproperty of the element to true. See the examples for details. To detect when an element loses focus, use theonblurevent. How to register: ...
The Personalised Plates website has a big input box on every page for searching for available personalised plates. The page template uses the Javascript form element focus() function to set the focus on this text box when the page loads so the user can start to type in a personalised plate...
var target = e.target || e.srcElement; target.style.backgroundColor = 'initial'; //如果是验证数字的文本框 if(target === input1){ if(!/^\d*$/.test(target.value.trim())){ target.focus(); tips.innerHTML = '只能输入数字,请重新输入' ...
focus:元素获得焦点,不回冒泡; focusin:获得焦点,与HTML事件focus等价,但会冒泡; focusout:失去焦点,与HTML事件blur等价; 如: window.onfocus = function () { console.log('focus'); //focus console.log(document.hasFocus()); //True } window.onblur = function () { ...