尝试使用 casperjs 通过 id 填充表格元素

Question

casper.thenEvaluate(function(text){
    document.querySelector("#inputValue").value=text
})

casper.thenEvaluate seems to not accept the argument and it is filling undefined in the webpage.

Answer 1

According to the documentations you should use "thenEvaluate" after "start" like this:

// Querying for "Chuck Norris" on Google
casper.start('http://google.fr/').thenEvaluate(function(term) {
    document.querySelector('input[name="q"]').setAttribute('value', term);
    document.querySelector('form[name="f"]').submit();
}, 'Chuck Norris');

casper.run();

source:

http://docs.casperjs.org/en/latest/modules/casper.html#thenevaluate

Answer 2

Since evaluate runs in browser context(instead of Casper one) you have to explicitly provide variables after the callback function definition. Please check example from the docs

casper.evaluate(function(username, password) {
  document.querySelector('#username').value = username;
  document.querySelector('#password').value = password;
  document.querySelector('#submit').click();
}, 'sheldon.cooper', 'b4z1ng4');

Note that username param in callback corresponds to sheldon.cooper and password param corresponds to b4z1ng4 .