Skip to content

Instantly share code, notes, and snippets.

Embed
What would you like to do?
supplant - Crockford
/**
* supplant() does variable substitution on the string. It scans through the string looking for
* expressions enclosed in { } braces. If an expression is found, use it as a key on the object,
* and if the key has a string value or number value, it is substituted for the bracket expression
* and it repeats.
*
* Written by Douglas Crockford
* http://www.crockford.com/
*/
String.prototype.supplant = function (o) {
return this.replace(
/{([^{}]*)}/g,
function (a, b) {
var r = o[b];
return typeof r === 'string' || typeof r === 'number' ? r : a;
}
);
};
//
// Example 1 basic usage
//
linkTpl = '<a href="{url}" class="{class}">{lable}</a>';
links = linkTpl.supplant({
url : 'http://example.com',
class : 'lnk',
lable : 'Link Bezeichnung'
});
//
// Example 2 more advanced usage
//
var items = [],
listItemTpl = '<li><a href="{url}" class="{class}">{lable}</a></li>';
for (i=0;i<20;i++) {
items.push(listItemTpl.supplant({
url : 'http://example.com',
class : 'lnk',
lable : 'Link Bezeichnung'
}));
}
// Join items e.g. to insert into DOM
items = items.join('');
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
You can’t perform that action at this time.