[英]loop through arrays and output results to html
我有这个方法say(),它有两个参数。 这是原型的属性,因此多个对象将使用它。
我想获取它返回的那些值,循环遍历它们,并将它们输出到我的html中。 我不知道的部分是,如何将每个单独的段落标签作为目标,使其与每个变量生成结果中每个变量的输出相对应? 这需要双循环吗? 我迷路了。 var para = document.querySelectorAll('p');
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 whoWhat, whoJob;
};
function Peep(name, job) {
this.name = name;
this.job = job;
}
Peep.prototype.speak = speak;
var randy = new Peep('Randy', 'lawyer');
randy.speak('"blahblah"', randy.job);
var mandy = new Peep('Mandy', 'mom');
mandy.speak('"woooooaahhhh"', mandy.job);
这是一个jsfiddle
检查一下-jsFiddle
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 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>
使用JavaScript,您可以访问DOM(文档对象模型)并将新元素追加到现有元素。 例如,您可以创建一个新的段落元素,并将该段落元素添加到ID为“ result”的现有div中。 这是一个例子:
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");
这是带有所需html的jsfiddle: http : //jsfiddle.net/stH7b/2/ 。 您还可以在此处找到有关如何将段落添加到DOM的更多信息: http : //www.w3schools.com/js/js_htmldom_nodes.asp
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