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[英]Trying to make an array of strings print out 1 by 1 in order when a button is clicked
[英]Trying to make a Javascript Array Print out using Inputted value
我的第一個問題是我是否可以正確地從id“ textOne”中獲取值到我的var中? 其次,我應該讓while循環運行“而代表我要打印的索引值的變量”大於或等於最小數組值。 我的While循環條件正確嗎?
我只是想讓它根據用戶輸入的1-5在我的數組中打印出正確數量的索引。
提前致謝。
<input type="button" value="Click" onclick="JobDuties()" />
to see my top
<input type="text" id="textOne" />
job duties here
<p id="answer"></p>
<script type="text/javascript">
function JobDuties()
{
var x = "";
var a = document.getElementById('textOne').value;
var b = a - 1;
myduties = new Array();
myduties[0] = "Saab";
myduties[1] = "Volvo";
myduties[2] = "BMW";
myduties[3] = "Toyota";
myduties[4] = "Ford";
}
while (a>=0)
{
x = x + myduties[b];
document.getElementById("answer").innerHTML=x;
}
</script>
我假設您要打印出正確的數組值,而不是數組,因為沒有多個。 PS>如果您不這樣做,人們不喜歡這里的家庭作業問題,因為完全回答並不能幫助您學習。 我會部分回答。
代碼如下:
var i = 1; //The variable you increment up to the use input variable a
while(i =< myduties.length){
if(i == a){ //if i and a are same then that position
//in the array will have the car type the user requested
myduties[i-1] //and set it to the DOM or document element similar to what you already had
}
i = i + 1; //Increment i towards the one less than the length of the array
}
雖然不完美或未經檢查,但是應該為您提供一些指示。
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