将标签转换为html实体

Question

Is it possible to convert html tags to html entities using javascript/jquery using any way possible such as regex or some other way. If yes, then how?

Example:

<div> should be converted to <div>

Note: I am not talking about server-side languages.

Answer 1

Try this function for the HTML special characters:

function htmlencode(str) {
    return str.replace(/[&<>"']/g, function($0) {
        return "&" + {"&":"amp", "<":"lt", ">":"gt", '"':"quot", "'":"#39"}[$0] + ";";
    });
}

Answer 2

As you tagged with jquery, a jQuery-powered solution should work for you:

$("<div>").text("<div>bleh</div>whatever").html()

Replace the argument to the text-method with whatever markup you want to escape.

Answer 3

I have 2 fast and small implementations for encoding HTML safely.

You can encode all characters in your string:

function encode(e){return e.replace(/[^]/g,function(e){return"&#"+e.charCodeAt(0)+";"})}

Or just target the main characters to worry about (&, inebreaks, <, >, " and ') like:

 function encode(r){ return r.replace(/[\\x26\\x0A\\<>'"]/g,function(r){return"&#"+r.charCodeAt(0)+";"}) } var myString='Encode HTML entities!\\n"Safe" escape <script></'+'script> & other tags!'; test.value=encode(myString); testing.innerHTML=encode(myString); /************* * \\x26 is &ampersand (it has to be first), * \\x0A is newline, *************/ 

 <p><b>What JavaScript Generated:</b></p> <textarea id=test rows="3" cols="55"></textarea> <p><b>What It Renders Too In HTML:</b></p> <div id="testing">www.WHAK.com</div> 

Answer 4

In JQuery:

$('<div/>').text('This is fun & stuff').html(); // evaluates to "This is fun &amp; stuff"

http://debuggable.com/posts/encode-html-entities-with-jquery:480f4dd6-13cc-4ce9-8071-4710cbdd56cb

Answer 5

If you have the variable and you want to insert it on a div, you can call text().

var myVar = "<span><strong>Some vars</strong> Some var extra</span>";
$("div").text(myVar);

Answer 6

var d = "<div>"
d = d.replace(/<|>/g, function(chr){
    return chr == "<" ? "&lt;" : "&gt;"
})
console.log(d)

Answer 7

There's a concise way of doing this using String.prototype.replace() and regular expressions as follows:

var tag = "<h1>This should </h1>be bold<h2> and big</h2>";
var escapedTag = tag.replace(/</g, "&lt;").replace(/>/g, "&gt;");