我如何将变量内容传递给函数作为参数

Question

$(function () {

    var info = JSON.parse($('#userInfo').text());
    var empFirstName = info.EmployeedFirstName;
    var empLastName = info.EmployeedLastName;
    var empFullName = empFirstName + " " + empLastName;
});

I am calling the summary function from a hyper link. I only want to call the summary function when the link is clicked on.

<a onclick="summary();">Summary</a>

function summary(empFullName){
}

Answer 1

Remove the inline function call from the link and add a click event handler to your link, then call the function and pass your variable to it, when the click handler gets called. Take a look at the snippet and you will get the idea.

 $(function () { //var info = JSON.parse($('#userInfo').text()); //var empFirstName = info.EmployeedFirstName; //var empLastName = info.EmployeedLastName; var empFullName = 'foo' + " " + 'bar'; // added click event handler here $('a').on('click', function() { summary(empFullName); // call summary with empFullName }); }); function summary(empFullName){ console.log(empFullName); $('#output').text(empFullName); } 

 <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.1/jquery.min.js"></script> <a href="#">Summary</a> <div id="output"></div> 

Answer 2

This will work for you, but you should look into the window object, global variables, and why they may be considered bad.

$(function () {    
    var info = JSON.parse($('#userInfo').text());
    var empFirstName = info.EmployeedFirstName;
    var empLastName = info.EmployeedLastName;
    window.empFullName = empFirstName + " " + empLastName;
});

function summary(empFullName){
    // use empFullName here
}

Then modify your link to pass in the global

<a onclick="summary(empFullName);">Summary</a>

Some related reading: Should I use window.variable or var?