Javascript 循环遍历数组并将结果输出到html
我有一个方法speak(),它接受两个参数。这是原型的属性,因此多个对象将使用它 我想获取它返回的值,循环它们,并将它们输出到我的html。我不明白的是,我如何将每个段落标记作为目标,使其与我生成的每个变量结果的输出相对应? 这需要一个双循环吗?我迷路了。 var para=document.querySelectorAll('p') 这里有一个检查一下这个- 继续将HTML添加到文本中。最后将它们添加到DOM中Javascript 循环遍历数组并将结果输出到html,javascript,arrays,loops,Javascript,Arrays,Loops,我有一个方法speak(),它接受两个参数。这是原型的属性,因此多个对象将使用它 我想获取它返回的值,循环它们,并将它们输出到我的html。我不明白的是,我如何将每个段落标记作为目标,使其与我生成的每个变量结果的输出相对应? 这需要一个双循环吗?我迷路了。 var para=document.querySelectorAll('p') 这里有一个检查一下这个- 继续将HTML添加到文本中。最后将它们添加到DOM中 var speak = function(what, job) { var
var speak = function(what, job) {
var whoWhat = this.name + ' says, ' + what,
whoJob = this.name + "'s job is: " + job;
console.log(whoWhat);
console.log(whoJob);
return "<p>"+whoWhat+", "+whoJob+"</p>";
};
var txt = "";
var randy = new Peep('Randy', 'lawyer');
txt+=randy.speak('"blahblah"', randy.job);
var mandy = new Peep('Mandy', 'mom');
txt+=mandy.speak('"woooooaahhhh"', mandy.job);
document.getElementById('result').innerHTML = txt;
//in HTML add the result node
<body>
<p id='result'>
</p>
</body>
var speak=函数(什么,作业){
var whohat=this.name+“说,”+what,
whoJob=this.name+“”的作业是:“+job;
console.log(whohat);
console.log(whoJob);
返回“”+whohat+”,“+whoJob+””;
};
var txt=“”;
var randy=新Peep(“randy”,“律师”);
txt+=randy.speak('blahblah',randy.job);
var mandy=新的窥视(“mandy”,“mom”);
txt+=mandy.speak('woooooaaahh',mandy.job);
document.getElementById('result').innerHTML=txt;
//在HTML中添加结果节点
使用JavaScript,您可以访问DOM(文档对象模型),并可以将新元素附加到现有元素中。例如,您可以创建一个新的段落元素,并将此段落元素添加到id为“result”的现有div中。以下是一个例子:
var appendText = function (text, parentId) {
var para = document.createElement("p");
var node = document.createTextNode(text);
para.appendChild(node);
var parentElement = document.getElementById(parentId);
parentElement.appendChild(para);
}
var speak = function (what, job) {
var whoWhat = this.name + ' says, ' + what,
whoJob = this.name + "'s job is: " + job;
return [whoWhat, whoJob];
};
function Peep(name, job) {
this.name = name;
this.job = job;
}
Peep.prototype.speak = speak;
var randy = new Peep('Randy', 'lawyer');
var randySays = randy.speak('"blahblah"', randy.job);
appendText(randySays[0], "result");
appendText(randySays[1], "result");
var mandy = new Peep('Mandy', 'mom');
var mandySays = mandy.speak('"woooooaahhhh"', mandy.job);
appendText(mandySays[0], "result");
appendText(mandySays[1], "result");
以下是包含所需html的JSFIDLE:。您还可以在此处找到有关如何将段落附加到DOM的更多信息:
var appendText = function (text, parentId) {
var para = document.createElement("p");
var node = document.createTextNode(text);
para.appendChild(node);
var parentElement = document.getElementById(parentId);
parentElement.appendChild(para);
}
var speak = function (what, job) {
var whoWhat = this.name + ' says, ' + what,
whoJob = this.name + "'s job is: " + job;
return [whoWhat, whoJob];
};
function Peep(name, job) {
this.name = name;
this.job = job;
}
Peep.prototype.speak = speak;
var randy = new Peep('Randy', 'lawyer');
var randySays = randy.speak('"blahblah"', randy.job);
appendText(randySays[0], "result");
appendText(randySays[1], "result");
var mandy = new Peep('Mandy', 'mom');
var mandySays = mandy.speak('"woooooaahhhh"', mandy.job);
appendText(mandySays[0], "result");
appendText(mandySays[1], "result");