[英]How to validate all inputs which exists on page?
I have this html page which is dynamical created, which contains some divs.我有这个动态创建的 html 页面,其中包含一些 div。 Every div-question(0,1,2, etc) contain an input based on which answer type the user chose.
每个 div-question(0,1,2, etc) 都包含一个基于用户选择的答案类型的输入。 I want to validate every single inputs from page and:
我想验证页面中的每一个输入,并且:
If value of one input type number,text,date is != "" alert("something")如果一个输入类型 number,text,date 的值为 != "" alert("something")
else send the value in an array;否则将值发送到数组中;
If checkbox/radio is not checked alert("something");如果未选中复选框/收音机警报(“某事”);
I tried something like this:我试过这样的事情:
let nrDiv = document.getElementsByClassName("div-question");
let existInput = nrDiv[0].querySelector("input[type='text']");
let numberInput = nrDiv[0].querySelector("input[type='number']");
if (document.body.contains(existInput)) {
for (let i=0; i < nrDiv.length ;i++) {
let container = document.getElementsByClassName("div-questions" + i + "");
let userInputAnswer = container[0].querySelector("input[type='text']");
if (userInputAnswer.value == "") {
alert("Adaugati un raspuns!")
return;
}
if (userInputAnswer.value != ""){
let answer = {
question: questions[i].textQuestion,
answer: userInputAnswer.value
}
answers.push(answer);
}
}
}
It's working but if I come with another for loop, for input type="number" is not working anymore.它正在工作,但如果我使用另一个 for 循环,for input type="number" 将不再工作。 I'm getting value null.
我得到了价值 null。 So if I come with this:
所以,如果我带着这个:
if (document.body.contains(numberInput)) {
for (let i=0; i < nrDiv.length ;i++) {
let container = document.getElementsByClassName("div-questions" + i + "");
let userInputAnswer = container.querySelector("input[type='number']");
if (userInputAnswer.value == "") {
alert("Adaugati un raspuns!")
return;
}
if (userInputAnswer.value != ""){
let answer = {
question: questions[i].textQuestion,
answer: userInputAnswer.value
}
answers.push(answer);
}
}
}
And for the checkbox and radio inputs I don't have any idea.对于复选框和无线电输入,我不知道。 I want something like this:
我想要这样的东西:
If all inputs are not empty and minimum one checkbox/radio is checked, send the answer and question in an array else alert("error");如果所有输入都不为空并且至少选中一个复选框/单选框,则将答案和问题发送到数组中 else alert("error");
I feel like this is simple once you add the required
attribute and/or a pattern
.一旦添加了
required
的属性和/或pattern
,我觉得这很简单。
This is a simple POC:这是一个简单的 POC:
<form action=""> <input type="text" required> <input type="number" required> <input type="checkbox" required> <input type="radio" required> <input type="date" required> <button type="submit">Submit</button> </form>
Notice that when you click the submit
button, it does the verification you want, in this case != ""
.请注意,当您单击
submit
按钮时,它会执行您想要的验证,在本例中!= ""
。
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