javascript 如何在javascript中连接变量？
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How to concatenate variables in javascript?
提问by eldan221
I am trying to concatenate variables in inside a function and then return. In php we just put a period before the "=" but it is not working in javascript.
我试图在函数内部连接变量然后返回。在 php 中，我们只是在“=”之前放了一个句点，但它在 javascript 中不起作用。
Can someone please help me figure this one out?
有人可以帮我解决这个问题吗？
function NewMenuItem(){
var output = "<input type='checkbox'> ";
var output .= "<input type='text'> ";
return output;
}
回答by agconti
The +operator will concatenate two strings, ie. "Hello" + " World" //> "Hello World". Using +=is a short cut for assigning and concatenating a variable with its self.
该+运营商将连接两个字符串，即。"Hello" + " World" //> "Hello World"。Using+=是分配变量并将其与其自身连接的捷径。
ie. instead of:
IE。代替：
var myVar = "somestring";
myVar = myVar + "another String";
you can just do:
你可以这样做：
var myVar = "somestring";
myVar += "another String";
For your problem:
对于您的问题：
function NewMenuItem() {
//This is just a small example. The end result is more broader then this
var output = "<input type='checkbox'> ";
output += "<input type='text'> ";
return output;
} //end of NewMenuItem(){
回答by Santiago Nicolas Roca
"+=" is the standard way to concatenate in javascript;
"+=" 是 javascript 中的标准连接方式；
var a = "yourname";
var b = "yourlastname";
var name = a + b;
var complete_name = "my name is: ";
complete_name += name;
result : my name is: yourname yourlastname
结果：我的名字是：你的名字你的姓氏
