如何正确使用 jsPDF 库

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Shouldn't you also be using the jspdf.plugin.from_html.js library? Besides the main library (jspdf.js), you must use other libraries for "special operations" (like jspdf.plugin.addimage.js for using images). Check https://github.com/MrRio/jsPDF.

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最佳答案

you can use pdf from html as follows,

Step 1: Add the following script to the header

<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.2/jspdf.min.js"></script>

or download locally

Step 2: Add HTML script to execute jsPDF code

Customize this to pass the identifier or just change #content to be the identifier you need.

 <script>
function demoFromHTML() {
var pdf = new jsPDF('p', 'pt', 'letter');
// source can be HTML-formatted string, or a reference
// to an actual DOM element from which the text will be scraped.
source = $('#content')[0];


// we support special element handlers. Register them with jQuery-style
// ID selector for either ID or node name. ("#iAmID", "div", "span" etc.)
// There is no support for any other type of selectors
// (class, of compound) at this time.
specialElementHandlers = {
// element with id of "bypass" - jQuery style selector
'#bypassme': function (element, renderer) {
// true = "handled elsewhere, bypass text extraction"
return true
}
};
margins = {
top: 80,
bottom: 60,
left: 40,
width: 522
};
// all coords and widths are in jsPDF instance's declared units
// 'inches' in this case
pdf.fromHTML(
source, // HTML string or DOM elem ref.
margins.left, // x coord
margins.top, { // y coord
'width': margins.width, // max width of content on PDF
'elementHandlers': specialElementHandlers
},


function (dispose) {
// dispose: object with X, Y of the last line add to the PDF
//          this allow the insertion of new lines after html
pdf.save('Test.pdf');
}, margins
);
}
</script>

Step 3: Add your body content

<a href="javascript:demoFromHTML()" class="button">Run Code</a>
<div id="content">
<h1>
We support special element handlers. Register them with jQuery-style.
</h1>
</div>

Refer to the original tutorial

See a working fiddle

小开

You only need this link jspdf.min.js

It has everything in it.

<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.2/jspdf.min.js"></script>

小开

first, you have to create a handler.

var specialElementHandlers = {
'#editor': function(element, renderer){
return true;
}
};

then write this code in click event:

doc.fromHTML($('body').get(0), 15, 15, {
'width': 170,
'elementHandlers': specialElementHandlers
});


var pdfOutput = doc.output();
console.log(">>>"+pdfOutput );

assuming you've already declared doc variable. And Then you have save this pdf file using File-Plugin.

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This is finally what did it for me (and triggers a disposition):

function onClick() {
var pdf = new jsPDF('p', 'pt', 'letter');
pdf.canvas.height = 72 * 11;
pdf.canvas.width = 72 * 8.5;


pdf.fromHTML(document.body);


pdf.save('test.pdf');
};


var element = document.getElementById("clickbind");
element.addEventListener("click", onClick);

<h1>Dsdas</h1>


<a id="clickbind" href="#">Click</a>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.3/jspdf.min.js"></script>

And for those of the KnockoutJS inclination, a little binding:

ko.bindingHandlers.generatePDF = {
init: function(element) {


function onClick() {
var pdf = new jsPDF('p', 'pt', 'letter');
pdf.canvas.height = 72 * 11;
pdf.canvas.width = 72 * 8.5;


pdf.fromHTML(document.body);


pdf.save('test.pdf');
};


element.addEventListener("click", onClick);
}
};

小开

how about in vuejs how is it applicable?

function onClick() {
var pdf = new jsPDF('p', 'pt', 'letter');
pdf.canvas.height = 72 * 11;
pdf.canvas.width = 72 * 8.5;


pdf.fromHTML(document.body);


pdf.save('test.pdf');
};


var element = document.getElementById("clickbind");
element.addEventListener("click", onClick);

<h1>Dsdas</h1>


<a id="clickbind" href="#">Click</a>
<script src="https://cdnjs.cloudflare.com/ajax/libs/jspdf/1.3.3/jspdf.min.js"></script>

小开

According to the latest version (1.5.3) there is no fromHTML() method anymore. Instead you should utilize jsPDF HTML plugin, see: https://rawgit.com/MrRio/jsPDF/master/docs/module-html.html#~html

You also need to add html2canvas library in order for it to work properly: https://github.com/niklasvh/html2canvas

JS (from API docs):

var doc = new jsPDF();


doc.html(document.body, {
callback: function (doc) {
doc.save();
}
});

You can provide HTML string instead of reference to the DOM element as well.