将参数传递给 <html:link> 来自javascript

Question

<html:link href="DemoAction.do?method=val1&param1=val2">DEMO</html:link>

我怎样才能从javascript传递val1和val2？

Answer 1

Add styleId="myLink" to the <html:link> in order to query the element with JavaScript.
Then you can do the following in JS:

var val1 = "newval1", val2 = "newval2";

// Option 1: Set the href attribute regardless of its current value
var link = document.getElementById("myLink");
link.setAttribute("href", "DemoAction.do?method="+val1+"&param1="+val2);

// Option 2: Set the href attribute depending on its current value
var link = document.getElementById("myLink"),
    hrefParts = link.getAttribute("href").split("?");
link.setAttribute("href", hrefParts[0]+"?method="+val1+"&param1="+val2);