使用 jquery 按文本设置下拉值

我有一个下拉列表:

<select id="HowYouKnow" >
<option value="1">FRIEND</option>
<option value="2">GOOGLE</option>
<option value="3">AGENT</option></select>

在上面的下拉列表中，我知道下拉列表的文本。如何使用 jquery 设置 document.ready 中的下拉列表的值？

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小开 
$("#HowYouKnow").val("GOOGLE");
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$("#HowYouKnow option:eq(XXX)").attr('selected', 'selected');

where XXX is the index of the one you want.

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最佳答案

This is a method that works based on the text of the option, not the index. Just tested.

var theText = "GOOGLE";
$("#HowYouKnow option:contains(" + theText + ")").attr('selected', 'selected');

Or, if there are similar values (thanks shanabus):

$("#HowYouKnow option").each(function() {
if($(this).text() == theText) {
$(this).attr('selected', 'selected');
}
});
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$("#HowYouKnow option[value='" + theText + "']").attr('selected', 'selected'); // added single quotes
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Here is an simple example:

$("#country_id").change(function(){
if(this.value.toString() == ""){
return;
}
alert("You just changed country to: " + $("#country_id option:selected").text() + " which carried the value for country_id as: " + this.value.toString());
});
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var myText = 'GOOGLE';


$('#HowYouKnow option').map(function() {
if ($(this).text() == myText) return this;
}).attr('selected', 'selected');
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For the exact match use 

    $("#HowYouKnow option").filter(function(index) { return $(this).text() === "GOOGLE"; }).attr('selected', 'selected');

contains is going to select the last match which might not be exact.

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For GOOGLE, GOOGLEDOWN, GOOGLEUP i.e similar kind of value you can try below code

   $("#HowYouKnow option:contains('GOOGLE')").each(function () {


if($(this).html()=='GOOGLE'){
$(this).attr('selected', 'selected');
}
});

In this way,number of loop iteration can be reduced and will work in all situation.

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The below code works for me -:

jQuery('[id^=select_] > option').each(function(){
if (this.text.toLowerCase()=='text'){
jQuery('[id^=select_]').val(this.value);
}
});

jQuery('[id^=select_]') - This allows you to select drop down where ID of the drop down starts from select_

Hope the above helps!

Cheers S

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This is worked both chrome and firefox

set value in to dropdown box.

var given = $("#anotherbox").val();
$("#HowYouKnow").text(given).attr('value', given);
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try this..

$(element).find("option:contains(" + theText+ ")").attr('selected', 'selected');

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