本文介绍了检查重复使用ko.observableArray的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着小编来一起学习吧!
问题描述
如何加入之前,我可以检查重复签名。在下面的情况下,我想补充的签名,如果没有签名列表中找到。
How can I check the duplicate signatures before adding. In the below scenario, I wanted add signature if no signature found the list.
var Signature = function (name, interestDeclared) {
this.Name = ko.observable(name);
this.RelevantInterest = ko.observable(interestDeclared);
}
viewModel = {
signatures: ko.observableArray([]),
addSignature: function () {
var name = $('#signatureName').val();
var intd = $('#interest').is(':checked');
this.signatures.push(new Signature(name, intd));
},
deleteSignature: function (signature) {
this.signatures.remove(signature);
},
insertWitness: function (signature, position) {
this.signatures.splice(position, 0, signature);
}
};
ko.applyBindings(viewModel, document.getElementById("signatories"));
谢谢,
-Naren
Thanks,-Naren
推荐答案
使用jQuery的grep的功能:
Using jQuery's grep function:
addSignature: function () {
var name = $('#signatureName').val();
var intd = $('#interest').is(':checked');
if($.grep(this.signatures(), function(el){return el.Name() === name;}).length === 0){
this.signatures.push(new Signature(name, intd));
}
}
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