ʱ : һ 韩顺平javascript笔记(全套) - 百度文库ϿʼĶ
for(var i=0; i < fruits.length; i++){ fruits[i].checked=true; }
}else if(Obj.innerText==\ȡ\
for(var i=0; i < fruits.length; i++){
fruits[i].checked=false; }
}
}
//Ӧѡ
function selectCheck2(Obj){
var fruits = document.getElementsByName(\
if(myselect.checked){
for(var i=0; i < fruits.length; i++){ fruits[i].checked=true; }
}else {
for(var i=0; i < fruits.length; i++){
fruits[i].checked=false; }
}
} //-->
ҵĹﳵ
forms/form forms length : شС
item(index) : ָȡfomsϵĵڼform
˵ijijԪصʱ 3. document . forms[ڼ] . Ԫص 4. document . forms.item(ڼ). Ԫص һۺϰ
룺
function checkinfo(){ span1.innerText=\ //ȡϢ
if(document.forms[0].username.value.length <
document.forms[0].username.value.length > 6){ span1.innerText=\ûӦ4-6λ\
return false;//סҪأȻύˢ˾Ϳ }
//жǷOK
if(document.forms[0].pwd1.value.length <= 3){
4
||
span2.innerText=\ҪҪ3λ\ return false; }
if(document.forms[0].pwd1.value != document.forms[0].pwd2.value ){ span3.innerText=\βһ\ return false; } } //-->