DOM调用对象

Question

我试过使用调试器，但仍不明白为什么此函数不断输出数组中的第一个对象，无论输入什么内容。

我想要做的是遍历每个数组元素，如果来自文本框的输入等于其中一个名称属性，则打印该名称的信息。

我想过一个简单的for循环，检查文本框中的输入是否等于任何名称属性，然后检查数组元素是否可以工作。

HTML：

<script type = "text/javascript" src="js/ObjectTest.js"></script> 
<input type = "text" name = "name" id = "name"> </input> 
<button type = "submit" id = "submit" onclick = "findStudent()">Find Student </button> 

的Javascript：

var registeredStudents = [ 
    {name: "Matthew", GPA: 5.0, Faculty: "Science", Major: "Cognitive Systems"}, 
    {name: "Rohit", GPA: 5.0, Faculty: "Science", Major: "Micro-Biology"}, 
    {name: "Marcel", GPA: 5.0, Faculty: "Engineering", Major: "Undeclared"}, 
    {name: "Louis", GPA: 5.0, Faculty: "Engineering", Major: "Mechanical Engineering"}, 
    {name: "Rob", GPA: 5.0, Faculty: "Engineering", Major: "Mechanical Engineering"} 
]; 

function findStudent(){ 
    var submit = document.getElementById('name'); 
    for (var i = 0; i < registeredStudents.length; i++){ 
     if (submit.value = registeredStudents[i].name){ 
     console.log(registeredStudents[i]); 
     break; 
     } else if (submit.value != registeredStudents[i]){ 
     console.log("Not a registered student"); 
     } 
    } 
} 

Answer 1

你，如果条件是不对的，应该有==不=

功能findStudent（）{VAR 提交=的document.getElementById （'名称'）;如果（submit.value == registeredStudents [i] .name）{ console.log（registeredStudents [i]）; 休息; （submit.value！= registeredStudents [i]）{ } console.log（“Not a registered student”）; } } }