js给文本框赋值.docx

js给文本框赋值文本域语句如下：javascript赋值操作： document.getElementByIdx_x(testId).value=hello;注意：value与innerHTML的区别上面的value也可以写成innerHTML有value属性的标签才能使用getElementById().value比如像12345这种没有value属性的标签就用getElementById().innerHTML下面应用到具体页面来展示js的这种功能：订阅时事通讯 /* document.write( 欢迎订阅时事通讯); document.write(请选择您要的时事通讯：); function whoOnFocus() / 您选中了哪一时事通讯 var who = ; / 您选中的那一时事通讯 for(var j = 0; j document.SubscriptionNewsletters.newsletters.length; j+) if(document.SubscriptionNewsletters.newslettersj.checked = true) / 如果某复选框被选中 document.SubscriptionNewsletters.getElementById(whoOnFocus).value = ; / 清空文本框里的值 who = document.SubscriptionNewsletters.newslettersj.value; / 被选中复选框的值 document.SubscriptionNewsletters.getElementById(whoOnFocus).value = who + 接收焦点; function dispInfo() var s = ; for(var i = 0; i document.SubscriptionNewsletters.newsletters.length; i+) if(document.SubscriptionNewsletters.newslettersi.checked = true) / 如果某复选框被选中 s += document.SubscriptionNewsletters.newslettersi.value + ; / 显示您选过的时事通讯项目 document.write(以下是您订阅的时事通讯：); document.write( + s); */function whoOnFocus()var newsletters = document.getElementsByName(newsletters)var s = /alert(newsletters0.checked)document.SubscriptionNewsletters.whoOnFocus.value = for (var i=0;inewsletters.length;i+ )if (newslettersi.checked=true)s = s + newslettersi.valuedocument.SubscriptionNewsletters.whoOnFocus.value = sfunction dispInfo()var newsletters = document.getElementsByName(newsletters)var s = for (var i=0;inewsletters.length ;i+ )if (newslettersi.checked=true)s = s + newslettersi.value +if (s = )s = 你还没有订阅任何时事通讯document.getElementById(res).innerHTML = swindow.onload = function()var newsletters = document.getElementsByName(newsletters)for (var i=0;inewsletters.length;i+ )newslettersi.onclick=functio