如何将javascript转换为jquery [英] How convert javascript to jquery
问题描述
i don't know how to convert like
getElementById
document.getElementById("cnt").innerHTML += "select: " +numberOfAttribute+". By javascript<br>";
函数javascript_click(){
if( document.getElementById(value3)。value&& document.getElementById(value4)。value){
var attName = document.getElementById(value3)。value;
var attValue = document.getElementById(value4)。value;
var total_name_and_value =[+ attName +=+ attValue +];
var numberOfAttribute = document.querySelectorAll(total_name_and_value)。length;
document.getElementById(cnt)。innerHTML + =select:+ numberOfAttribute +。通过javascript
}
if(document.getElementById(value1)。value =='' &&& document.getElementById(val ue2)。value ==''&& document.getElementById(value3)。value ==''&& document.getElementById(value4)。value =='')
{
document.getElementById(cnt)。innerHTML + =错误。
;
}
}
我的尝试:
function javascript_click() {
if (document.getElementById("value3").value && document.getElementById("value4").value ) {
var attName=document.getElementById("value3").value;
var attValue=document.getElementById("value4").value;
var total_name_and_value = "[" + attName + "=" + attValue + "]";
var numberOfAttribute = document.querySelectorAll(total_name_and_value).length;
document.getElementById("cnt").innerHTML += "select: " +numberOfAttribute+". By javascript
";
}
if(document.getElementById("value1").value=='' && document.getElementById("value2").value=='' && document.getElementById("value3").value=='' && document.getElementById("value4").value=='')
{
document.getElementById("cnt").innerHTML += "wrong.
";
}
}
What I have tried:
$("value3").value;
i尝试这样,它没有工作..
i tried like this and it didn't work..
推荐答案
(value3)。value;
("value3").value;
i尝试这样和它没有工作..
i tried like this and it didn't work..
如果您正在更新代码以使用jQuery,那么获取文档的链接并不时查阅它将是一件好事。 ..
在vanila JS你有值,但在jQuery下只有 val :
.val()| jQuery API文档 [ ^ ]
If you in the process of updating your code to use jQuery it will be a good thing to grab a link to the documentation and consult it from time to time...
In vanila JS you have value, but under jQuery it is val only:
.val() | jQuery API Documentation[^]
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