casperjs is encountering difficulty locating the id even after setting it

Issue with CasperJS not locating the ID after setting it

Casper.then(function () {
    screenLog();
    var id =  String("_newid_");
    var arrow = this.evaluate(function () {
        var arrows = document.querySelectorAll('span.select2-selection__arrow');
        arrows[1].innerHTML = "aa";
        arrows[1].id = id;
        return arrows[1].innerHTML;
    });
    screenLog();
    this.click("#"+id);
    screenLog();
});

Error message received: CasperError: Cannot dispatch mousedown event on nonexistent selector: #newid

javascriptbrowserphantomjscasperjs

Answer №1

When using Caspers evaluate method, it operates in a separate environment (DOM environment), meaning that variables defined in the Casper environment are not accessible in the browser environment. However, you can transfer variables to the browser environment by including additional parameters in the evaluate function.

Therefore, if the 'id' is undefined in your situation, you can pass it correctly as shown below:

var id =  String("_newId_");
var arrow = this.evaluate(function (id) {
    var arrows = document.querySelectorAll('span.select2-selection__arrow');
    arrows[1].innerHTML = "aa";
    arrows[1].id = id;
    return arrows[1].innerHTML;
}, id);

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